The group of thousands of Central American migrants traveling north stopped Wednesday near the southern Mexican city of Juchitán de Zaragoza, about 1,000 miles away from the nearest us border entry in McAllen, Texas.
Mr Trump said the USA was "going to be prepared" and that the migrants are "not coming into our country".
Currently, the caravan is still thousands of miles away from the border and would take weeks to even reach the US.
That's according to three people familiar with the plans who spoke to The Associated Press on Thursday on the condition of anonymity because they weren't authorized to speak publicly.
President Donald Trump on Thursday will highlight immigration as a "crisis" facing the nation, making remarks from the Roosevelt Room of the White House before he travels to Columbia, Missouri, for another campaign rally, the second of 11 he plans in a last-minute blitz before Election Day on Tuesday. "They're not coming into our country".
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Ninth seed Barty broke Garcia once in each set to win the round-robin tie 6-3, 6-4 in one hour and 16 minutes. Nothing is said at the moment but we're just still trying to figure how we're going to make the schedule.
He has ramped up the rhetoric daily ahead of next Tuesday's midterm congressional elections, accusing the opposition Democrats of wanting to throw open the borders to floods of "tough people", "rapists" and other types of threats.
While Matias Romero would carry them toward the Gulf coast city of Veracruz and a route toward the Texas border, another large caravan early this year passed through Veracruz and then veered back toward Mexico City and eventually tried to head to Tijuana in the far northwest. They're trying to get up any way they can.
Trump targeting birthright citizenship with executive order.
The administration has also been ramping up security at ports of entry this week.
Trump says birthright citizenship will be ended
The president also tweeted about Democrat Harry Reid , who in 1993 called for the end of the birthright policy. "It's ridiculous. But Republicans such as Trump say it creates an incentive for people to come to the country illegally to have children.
With the pretense that he was going to present a proposal for changes to USA asylum policy, the president launched into one of his typical rants - though somewhat more muted - including his usual lies about immigrants and campaign-style attacks on Democrats.
The Immigration and Nationality Act states that anyone who arrives in the USA "whether or not at a designated port of arrival" may apply for asylum if he or she has a "well-founded fear of persecution on account of race, religion, nationality, membership in a particular social group, or political opinion".
Dozens of migrants interviewed at random over the last several days told us something similar about why they left: They dreamed of a better opportunity for themselves and their families in the United States and recognized that the caravan provided a safer way to make the journey. There was no indication from officials whether the request to transport the perhaps 4,000 people remaining in the group would be granted. On Monday, officials announced that about 5,200 were being deployed.
A further two caravans, smaller in size, have also formed. That ad depicted a mug shot of an African-American felon named Willie Horton, a convicted murderer, who was let out under a weekend furlough program supported by his Democratic opponent, Massachusetts Gov. Michael Dukakis.
That was already highly unusual, but on Wednesday, he told reporters at the White House: "We'll do up to anywhere between 10 and 15 000 military personnel".
Mother reunited wth son abducted by father 31 years ago
They agreed to work together to find Mann and his son, believing that Mann had entered the US illegally after taking the baby. Mann was living in Vernon, Conn. with his son who was born as Jermaine Mann but was unknowingly using a fake name in the U.S.