Mothers carrying their children smile, give me a thumbs up, and then point to a riverbank fifty metres or so away.
We’re on a walkway bridge between the Mexican city of Matamoros and Brownsville in Texas. The riverbank is of course the United States – so close you feel you can almost touch it.
For these families wide-eyed with excitement, this is the moment they’ve dreamt of. Many have endured months, even years, on the road.
Sometimes travelling thousands of miles through hostile countries, outwitting cartel gangs, and managing dizzyingly contradictory bureaucracy, all to get to this point: an asylum interview with United States border officials, and almost certain entry.
On its face, this all sounds like a system working in perfect harmony with the needy being helped by a welcoming country.
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But in reality, migration is a hotly disputed issue that is likely to dominate the Trump-Harris debate, and the run up to the presidential election itself.
You can watch live coverage of the debate between Kamala Harris and Donald Trump from midnight tonight on Sky News, on web and on mobile
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The group I am with on the bridge is mostly from Cuba, Nicaragua, Haiti, and Venezuela.
They’re claiming asylum, and with their paperwork and appointment email in hand, they approach the border with some trepidation but mostly with excitement and joy.
Many have waited months for their appointment to come through after applying for asylum on the US Customs and Border Protection (CBP) app.
This group of a few hundred people on the bridge are now just a few steps from America.
As they shuffle forward, CBP guards check their papers, make sure there are no errors, and wave them through to the other side for their case interviews.
These families, these children, are about to start a new life.
Along the border here in Matamoros, there’s little sign of Donald Trump’s border wall, but he’d doubtless approve of the razor wire fortifications on the American side of the Rio Grande.
Experts here say there’s no doubt who those seeking asylum are backing in this election and this debate – and that’s Kamala Harris, who is seen to have a far less hostile approach to immigration.
“I think the best would be a flexible US immigration policy again, like President Biden’s when he began his administration,” Oscar Misael Hernandez-Hernandez said as we chatted alongside the dozens of cars and trucks crossing the border.
Image: Professor Oscar Misael Hernandez-Hernandez
A professor of social anthropology at the El Colegio de la Frontera Norte research centre and an expert on Mexico-US border issues, he added: “Biden broke with ultra-conservative vision and immigration policy.
“So, I think if Harris implements a migration policy like this if she wins the presidency of the United States, it would be not only quite good for migrants in terms of human rights, but also quite good for international diplomacy, because the relations of the United States, at least with President Trump, if he wins, would be quite disastrous as they were in the past.”
In shelters and hostels across Mexico, many other migrant families simply have to wait for their border appointments.
It’s like a lottery, and it can take a long time for their number to come up.
Few leave the shelter; they would be easy prey for cartel gangs who would kidnap and hold them for ransom.
Marlen Cabrera, 39, from Honduras, and her family are waiting it out along with 200 others at the Casa del Migrante San Francisco de Asis shelter.
Image: Marlen Cabrera says making it the US is the only option she and her family have
Any tightening of the immigration rules – as threatened by Donald Trump – would be a disaster for her.
I asked her what she would do if the laws changed with a Trump victory. She says she doesn’t like to think about what-ifs.
“I’ve been here so long, and not being able to get in would be hard because it’s the only option I have,” she said.
“I have to get in. It would be really terrible if we couldn’t. And I don’t just speak for myself, I speak for everyone here.”
Jose Valdivia, the Nicaraguan manager of the shelter is even clearer.
“Everybody, since the last election, we all wanted the Democrats to win, right? Because the Democrats look out for the little guy,” he told me.
“That’s what everybody here as a migrant wants, we want the Democrats to win. No one wants Trump.”
Image: A US border agent checks migrant paperwork
Day in, day out, in any weather, the migrants line up for their appointment here at the border in Matamoros.
Along the almost 2,000-mile-long border separating Mexico and the United States, thousands of applicants are screened every day and allowed to enter America legally to start new lives in their new home country.
But these migrants are at the centre of one of the most divisive issues in America right now.
Since the summer, border restrictions introduced by the Biden administration, combined with assistance from Mexican authorities who hamper the movement of migrants to the border, has brought about a large reduction in the number of people illegally entering America.
Despite this, President Biden is widely considered to have failed on immigration, and while Kamala Harris’s team have been working hard to cast her as a sort of new candidate and a breath of fresh air, she is – whether they like it or not – part of this administration and is tainted by its perceived failures.
The latest polls suggest Donald Trump scores well on the immigration issue, and his team have been releasing pointed “attack ads” on Kamala Harris and her team on this subject. They in turn have released adverts attacking Trump.
You can watch live coverage of the debate between Kamala Harris and Donald Trump from midnight tonight on Sky News, on web and on mobile
In the debate itself, Trump is widely expected to try to nail Harris on immigration, and she will have to find a way to counter that.
Undoubtedly, she will point out that Trump’s supporters kiboshed a cross-party action plan for migration, but she is still tainted for certain.
While this will all play out in the political rough and tumble of the electoral process, it is important not to forget that thousands upon thousands of people will be affected by America’s future stance on immigration.
And for some asylum seekers, it is quite literally a matter of life and death.
The severity cannot be overstated, if an additional 50% tariffs are levied on all Chinese goods it will decimate trade between the world’s two biggest economies.
Remember, 50% would sit on top of what is already on the table: 34% announced last week, 20% announced at the start of US President Donald Trump’s term, and some additional tariffs left over from his first term in office.
In total, it means all Chinese goods would face tariffs of over 100%, some as high as 120%.
It’s a price that makes any trade almost impossible.
China is really the only nation in the world at the moment that is choosing to take a stand.
While others are publicly making concessions and sending delegations to negotiate, China has clearly calculated that not being seen to be bullied is worth the cost that retaliation will bring.
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6:50
Tariffs: Xi hits back at Trump
The real question, though, is if the US does indeed impose this extra 50% tomorrow, what could or would China do next?
There are some obvious measures that China will almost certainly enact.
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Further export controls on rare earth minerals (crucial for the development of high-tech products) are one example. China controls a huge proportion of the world’s supply, but the US would likely find workarounds in time.
Hiking tariffs on high-impact US products such as agricultural goods is another option, but there is only so far this could go.
The potentially more impactful options have significant drawbacks for Beijing.
It could, for instance, target high-profile American companies such as Apple and Tesla, but this isn’t ideal at a time when China is trying to attract more foreign investment, and some devaluation of the currency is possible, but it would also come with adverse effects.
Other options are more political and come with the risk of escalation beyond the economic arena.
In an opinion piece this morning, the editor of Xinhua, China’s state news agency, speculated that China could cease all cooperation with the US on the war against fentanyl.
This has been a major political issue for Mr Trump, and it’s hard to see it would not constitute some sort of red line for him.
Other options touted include banning the import of American films, or perhaps calling for the Chinese public to boycott all American products.
Anything like this comes with a sense that the world’s two most powerful superpowers might be teetering on the edge of not just a total economic decoupling, but cultural separation too.
There is understandably serious nervousness about how that could spiral and the precedent it sets.
Donald Trump’s trade tariffs on what he calls “the worst offenders” come into effect at 5am UK time, with China facing by far the biggest levy.
The US will hit Chinese imports with 104% tariffs, marking a significant trade escalation between the world’s two largest superpowers.
At a briefing on Tuesday, White House press secretary Karoline Leavitt said Donald Trump “believes that China wants to make a deal with the US,” before saying: “It was a mistake for China to retaliate.
“When America is punched, he punches back harder.”
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0:54
White House announces 104% tariff on China
After Mr Trump announced sweeping levies last week – hitting some imported goods from China with 34% tariffs – Beijing officials responded with like-for-like measures.
The US president then piled on an extra 50% levy on China, taking the total to 104% unless it withdrew its retaliatory 34% tariff.
China’s commerce ministry said in turn that it would “fight to the end”, and its foreign ministry accused the US of “economic bullying” and “destabilising” the world’s economies.
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‘Worst offender’ tariffs also in effect
Alongside China’s 104% tariff, roughly 60 countries – dubbed by the US president as the “worst offenders” – will also see levies come into effect today.
The EU will be hit with 20% tariffs, while countries like Vietnam and Cambodia see a 46% levy and 49% rate respectively.
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2:03
What’s going on with the US and China?
Since the tariffs were announced last Wednesday, global stock markets have plummeted, with four days of steep losses for all three of the US’ major indexes.
As trading closed on Tuesday evening, the S&P 500 lost 1.49%, the Nasdaq Composite fell 2.15%, and the Dow Jones Industrial Average dropped 0.84%.
According to LSEG data, S&P 500 companies have lost $5.8tn (£4.5tn) in stock market value since last Wednesday, the deepest four-day loss since the benchmark was created in the 1950s.
Image: Global stock markets have been reeling since Trump’s tariff announcement last week. Pic: AP
Meanwhile, the US president signed four executive orders to boost American coal mining and production.
The directives order: • keeping some coal plants that were set for retirement open; • directing the interior secretary to “acknowledge the end” of an Obama-era moratorium that paused coal leasing on federal lands; • requiring federal agencies to rescind policies transitioning the US away from coal production, and; • directing the Department of Energy and other federal agencies to assess how coal energy can meet rising demand from artificial intelligence.
At a White House ceremony, Mr Trump said the orders end his predecessor Joe Biden’s “war on beautiful clean coal,” and miners “will be put back to work”.
The severity cannot be overstated, if an additional 50% tariffs are levied on all Chinese goods it will decimate trade between the world’s two biggest economies.
Remember, 50% would sit on top of what is already on the table: 34% announced last week, 20% announced at the start of US President Donald Trump’s term, and some additional tariffs left over from his first term in office.
In total, it means all Chinese goods would face tariffs of over 100%, some as high as 120%.
It’s a price that makes any trade almost impossible.
China is really the only nation in the world at the moment that is choosing to take a stand.
While others are publicly making concessions and sending delegations to negotiate, China has clearly calculated that not being seen to be bullied is worth the cost that retaliation will bring.
Please use Chrome browser for a more accessible video player
6:50
Tariffs: Xi hits back at Trump
The real question, though, is if the US does indeed impose this extra 50% tomorrow, what could or would China do next?
There are some obvious measures that China will almost certainly enact.
Spreaker
This content is provided by Spreaker, which may be using cookies and other technologies.
To show you this content, we need your permission to use cookies.
You can use the buttons below to amend your preferences to enable Spreaker cookies or to allow those cookies just once.
You can change your settings at any time via the Privacy Options.
Unfortunately we have been unable to verify if you have consented to Spreaker cookies.
To view this content you can use the button below to allow Spreaker cookies for this session only.
Further export controls on rare earth minerals (crucial for the development of high-tech products) are one example. China controls a huge proportion of the world’s supply, but the US would likely find workarounds in time.
Hiking tariffs on high-impact US products such as agricultural goods is another option, but there is only so far this could go.
The potentially more impactful options have significant drawbacks for Beijing.
It could, for instance, target high-profile American companies such as Apple and Tesla, but this isn’t ideal at a time when China is trying to attract more foreign investment, and some devaluation of the currency is possible, but it would also come with adverse effects.
Other options are more political and come with the risk of escalation beyond the economic arena.
In an opinion piece this morning, the editor of Xinhua, China’s state news agency, speculated that China could cease all cooperation with the US on the war against fentanyl.
This has been a major political issue for Mr Trump, and it’s hard to see it would not constitute some sort of red line for him.
Other options touted include banning the import of American films, or perhaps calling for the Chinese public to boycott all American products.
Anything like this comes with a sense that the world’s two most powerful superpowers might be teetering on the edge of not just a total economic decoupling, but cultural separation too.
There is understandably serious nervousness about how that could spiral and the precedent it sets.