FILE - Honduran migrants taking part in a caravan heading to the US tear down the border fence between Ciudad Tecun Uman in Guatemala and Ciudad Hidalgo, Mexico, Oct. 28, 2018.
"Border security is national security", General Terrence O'Shaughnessy, head of U.S. Northern Command, told reporters Monday.
The troops are expected to perform a wide variety of functions such as building tents and barricades and transporting supplies for the Border Patrol, and not be involved in policing the border, officials said. The new crop of troops who will be deployed by Saturday will join the roughly 2,100 National Guard forces already operating - primarily in logistics and background support missions - on the southern border in support of U.S. Customs and Border Protection agents. And on Monday, the Federal Police aggressively tried to turn back hundreds more migrants who crossed the Suchiate River to enter Mexico from Guatemala.
The first, larger caravan made it across the river by wading or on rafts, and now is advancing through southern Mexico.
Three helicopters will be deployed and enough barbed wire will be made available to cover 150 miles of the border.
"There could be incidental interaction between our military members and migrants and other personnel that may be in that area", he added, and to address that, "we are making sure our soldiers, our Marines are going to be fully trained on how to do that interaction - they are going to understand the rules for that interaction", The Hill reported.
On Sunday, one migrant died after he was hit with a rubber bullet when Mexican federal police rebuffed another group of migrants who tried to enter the country over the worldwide bridge. They represent a fraction of the approximately 5,200 troops approved for the border security mission stood up in response to the migrant caravan - still more than one thousand miles from the US border. They said asylum in the United States is their primary goal, but some expressed openness to applying for protected status in Mexico if that doesn't work out. One migrant was killed Sunday night by a head wound, but the cause was unclear. More than 1,500 of the original group have applied for asylum in Mexico. They will include exactly how many forces are needed.
Notorious Boston gangster 'Whitey' Bulger found dead in prison
As they called him a coward, a rat, a punk and Satan, Bulger kept his head down and showed no emotion as he scribbled on a pad. He had been incarcerated in Arizona, Oklahoma and Florida, prison officials have said, without giving reasons for the moves.
"We just want to a way to get to our final goal, which is the border", he said.
But news reports quote unnamed USA officials as saying the White House is weighing a range of administrative and legal actions on grounds of national security to restrict the ability of migrants to seek asylum.
According to O'Shaughnessy, approximately 1,000 troops have already been positioned at bases in Texas joining an additional 870 stationed at U.S. Army North in San Antonio.
Pueblo Sin Fronteras, the group supporting the caravan, has said it hopes to hold meetings in the Mexican capital with federal lawmakers and authorities as well as representatives of the incoming government that takes office December 1 to discuss migrants' rights and the caravan's future.
On Monday, he tweeted without providing evidence, "Many Gang Members and some very bad people are mixed into the Caravan heading to our Southern Border".
Inside the United States, of course, a network of subversive leftist "resettlement" groups await the invasion force, hoping to provide sanctuary, then push the illegal aliens into jobs, the public schools and then onto welfare.
The U.S. military has already begun delivering jersey barriers to the southern border in conjunction with the deployment plans.