In recent days, he has sought to present as a threat to the United States a large group of migrants from Central America who have left poverty and violence at home and are heading slowly through Mexico toward the USA border.
U.S. Secretary of State Michael Pompeo said October 19 that four Mexican police officers were injured in a standoff at the Mexican border, in which an undetermined number of migrants were also injured, according to CNN. Defense Secretary James Mattis told reporters at the Pentagon that the deployment was no stunt, saying, "We don't do stunts in this department".
President Donald Trump further hardened his pre-election anti-immigration rhetoric in a Florida campaign stop on Wednesday, after threatening to deploy as many as 15 000 soldiers on the Mexican border - equal to the size of the USA contingent in Afghanistan.
"Asylum is not a program for people living in poverty", Trump said.
As a presidential candidate before the USA election in 2016, Trump promised to harden immigration laws and build a wall along the southern border with Mexico, but implementation of his signature campaign promise has been slow.
Meanwhile, Trump has also vowed that the illegal migrants won't be allowed to cross into the U.S.
Trump claimed asylum seekers "never show up for their trials" (they do).
"I will fulfill my sacred obligation to defend the United States of America", Trump said. He said he told the armed troops deployed to the border that they could open fire if migrants throw rocks at them, something Border Patrol agents have done in the past.
"They're going to understand the rules for that interaction and they'll be consistent with CBP", he said.
"My administration is finalizing a plan to end the rampant abuse of our asylum system", Trump said in a speech about immigration.
But the mass shooting at a Pittsburgh synagogue and pipe-bomb mailings to prominent Democrat politicians and their supporters commandeered the news cycle over the past two weeks.
Trump rejected the idea he was "fearmongering" or using the issue for political purposes, but his escalating rhetoric in the waning days of the campaign season calls that denial into question.
One Honduran woman, who witnessed her husband's murder three years ago, said she joined the caravan to seek opportunities to send money back home to help provide for her son's expensive medical care.
"Migrants seeking asylum will have to present themselves lawfully at a port of entry", Trump stated.
The president added that the "illegal aliens" should "turn back now".
"They should apply to come into our country", he added.
President Trump announced a major change in US asylum policy Thursday, saying the government will no longer allow migrants who jump the border to turn around and claim asylum in an attempt to gain a foothold here.
Donald Trump on Tuesday morning continued to engage in irresponsible and incendiary fearmongering regarding the migrant caravans in Mexico despite Saturday's rampage at the Tree of Life Synagogue and notable bipartisan criticism.
The president said he would issue a comprehensive executive order about these new policies in a week.
A boy with a USA flag joins Salvadoran migrants embarking on a journey in caravan to the United States, in San Salvador.