Trump spoke during a presentation of his controversial policy on cracking down against what he says is uncontrolled illegal immigration. And any change would nearly certainly be immediately challenged in court.
"The top general overseeing US Northern Command said on Tuesday that "(Customs and Border Protection) personnel are. absolutely the primary and principal members that will be handling, specifically, the migrants".
The official spoke on condition of anonymity to provide details not yet released.
Donald Trump says he is finalising a plan to force migrants to present themselves at a legal port of entry to get into the US.
Former generals who no longer need to respond to the wishes and whims of the commander in chief are becoming increasingly vocal about how President Donald Trump is using the USA military as props before the midterms elections, with one calling the massive deployment of personnel to the southern border a "political stunt". The deployment appears to be the largest such peacetime mobilization of active-duty USA troops at the border in at least a century. But the act of sending 15,000 U.S. troops to face a tired caravan of less than 5000 migrants, a number that is dwindling all the time as the foot-weary dropout, invited ridicule, as did the President's claim that he was intent on protecting American women from what he perceives as marauding hordes.
Trump also said his administration will "catch" immigrants but no longer "release" them.
The migrant caravan set off on 12 October with a plan to trek for more than a month.
Though Nielsen met on Friday morning to discuss election security, the crowd of consultants, professors and not-for-profit workers questioned her instead on the administration's immigration policies for almost all of the 30 minutes allotted for a question and answer period. In McAllen, Texas, in the Rio Grande Valley, workers were seen installing additional gates and fences along a walkway on a bridge between the USA and Mexico, according to The Monitor paper of McAllen.
The suit claims Trump "continues to abuse the law, including constitutional rights, to deter Central Americans from exercising their lawful right to seek asylum in the United States".
Migrants arriving at the USA border to seek asylum are routinely subjected to tactics that immigration rights advocates say are created to drive them away in violation of their rights under federal law. Generally, only about 20 percent of applicants are approved. The number of asylum claims from Honduran nationals has skyrocketed over the last several years. They're going to be very nice, and they're going to wait and if they don't get asylum, they get out.
The president, who has ordered US troops to the border with Mexico, also suggested rock-throwing by migrants would be treated as equivalent to gun usage.
The governor of the Mexican state of Veracruz, Miguel Angel Yunes, said on Friday buses would be provided to carry migrants to the nation's capital.
Trump has nonetheless mounted an enormous show of force in response to their movement - coinciding with elections that will determine which party controls Congress.
The President reaffirmed the group will not pass into the USA on Friday, just days after the White House deployed over 5,000 troops to secure the border. But official statements suggest at least some of them will be armed.
Children would be detained with their parents, he said. "We have about 5,800".
Previous caravans traveling from Central America have dwindled from thousands to hundreds of people by the time they reach the border.
"The real issue is whether the military is being used for partisan political purposes", explained Dubik. In the past week, he's also ordered thousands of troops to the U.S. -Mexico border to stop the migrant caravans and proposed ending by executive order the Constitution's guarantee of citizenship to anyone born in the U.S. The 53-second spot includes expletives uttered by Bracamontes during his trial as he professed regret at not killing more officials.