Trump told reporters at the White House on Wednesday that "we'll go up to anywhere between 10 and 15,000 military personnel on top of Border Patrol, ICE and everybody else at the border".
"We'll be doing an executive order sometime next week", he said, giving little further detail.
"Those who choose to break our laws and enter illegally will no longer be able to use meritless claims to gain automatic admission into our country", he added.
Trump also tweeted a video Wednesday alleging Democrats were responsible for allowing a homicidal immigrant into the USA but provided no evidence supporting that claim.
Trump said on Wednesday that the United States could send as many as 15,000 troops to the border to confront the migrant caravan, more than twice the number previously disclosed by defense officials.
Mexican authorities haven't directly targeted the main caravan of about 4,000 migrants, and activists aiding that group said they were shifting their route toward the Gulf coast, a path closer to the Texas border.
Mexico's U.S. Ambassador - Geronimo Gutierrez - is blasting Democrats for saying everyone in the migrant caravan are all peaceful refugees seeking asylum.
Trump's actions and statements come days after a shooting at a Pittsburgh synagogue that left 11 people dead. "This is an invasion".
Watch: As Trump Preps to Send Troops on the Border, Here's Why.
That means more than 9,000 troops have already been committed to military operations on the border and Trump, who is prone to hyperbole, on Wednesday said the final number could swell to 15,000 troops.
In a lengthy speech on migration, Trump promised an executive order sometime next week that would ban migrants from claiming asylum if they cross the border illegally.
Trump has consistently exaggerated the size of the caravan and the threat it plays to the United States.
According to the 1997 Flores settlement, children can only be held in immigration detention for up to 20 days, after which they must either be released to a guardian or placed in a licensed shelter.
US President Donald Trump walks on the South Lawn of the White House after delivering remarks at a Make America Great Again Rally in Estero, Florida on October 31, 2018 in Washington, DC. One group got into a violent confrontation with Mexican police at the border with Guatemala, throwing rocks. "They want to throw rocks at our military, our military fights back", he said.
"What I can confirm is there will be additional force over and above the 5,239; the magnitude of that difference, I don't have an answer for you", he told reporters at the Pentagon. "When they throw rocks, like they did at the Mexico military and police, I said, consider it a rifle".
His comments came just days before the midterm elections, and seemed created to excite his base as a group of Central American migrants makes its way through Mexico toward the southern USA border.
Fox News contributor and former Education Secretary Bill Bennett said the president is "absolutely right" to take a tough stance on illegal immigration and asylum-seekers.
Tyler Perry to kill off Madea in A Madea Family Funeral
Perry has signed a deal with Viacom that will see him producing content across television, film, and short-form video platforms. Perry said he is taking Madea on a farewell stage tour, and he says he'll use 2019's "Family Funeral " to end her storyline.
Perfect without makeup
In an Instagram post, Alicia Keys and husband Swizz Beats posted a video about how they posed for a culture magazine together. Alicia Keys is still a superwoman slaying on red carpet relying only on good moisturizers, eyebrow gel and lipgloss.