As we film on a street corner a driver shouts out of his window:
"Tell Trump to go back to where his family came from - we don't want him
here."
Another man shouts: "He's an idiot, he talks too much."
Mr Trump's visit to the city which borders Mexico has unsurprisingly stirred strong
feelings.
The billionaire businessman and would-be president generated headlines
with his repeated insistence that Mexico was sending rapists, drug dealers and
criminals over to US soil.
Cab driver Juan Jose Hernadez, who hails from Mexico himself, tells me:
"Trump has offended Hispanic people.
"Most people who come from Mexico are good, hardworking people.
"Sure, there will be some bad people who get into the USA but only
a few."
Some go further, calling Mr Trump a racist and a bigot.
But even in Laredo, which according to the US census is the most
Hispanic city in America, people acknowledge that there needs to be controls on
immigration.
Immigrants themselves acknowledge it.
And that sentiment is what Mr Trump has tapped into with volatile
language and dramatic suggestion of building a 2,000-mile wall to span the
US/Mexico border.
His style and rhetoric alienate many, but if the polls are to be
believed they resonate with millions of Americans.
One major poll this week gave him a near double-digit lead over his
closest rival for the Republican nomination for president.
"He is blunt. He doesn't sugarcoat things like other
politicians," says 'Andrea' who we catch up with after Mr Trump attended a
hastily convened gathering with border patrol workers.
He had been promised a tour of the border with those who police it but
the plug was pulled at the last minute.
The official reason given by the workers' union was that they did not
want to be seen to endorse any candidate.
Mr Trump's reason, delivered with gusto to the assembled media, was the
truth about illegal immigration is being kept hidden.
And plenty of border staff at the gathering privately tell us that is
what they think too.
Mr Trump does not pull his punches on immigration - or it would seem
much else.
That guarantees him airtime and column inches.
But as time goes by, the man so emphatic on opinion is being
increasingly pressed for facts.
"Do you have evidence that Mexico is sending criminals here?"
shouts a journalist.
"I do. And people tell me about it," says Mr Trump. That is
it.
"What will you do with the millions of undocumented migrants in
America?" asks another.
"We need to strengthen the border and then we will have lots of
time to think about that," says Mr Trump.
Again, that is it, as he heads off in the kind of cavalcade that reminds
you of presidents.
He has money. Lots of it. That is arguably the most critical ingredient
in any US election.
He has bravado too - and that cannot do him any harm.
He went as far in Laredo as promising he will secure the Hispanic vote
and the Republican nomination.
But if he is to persist as a serious candidate then the demand for
detail over broad brush strokes, policy detail over opinion, will surely
increase.