As active-duty U.S. soldiers began moving toward the nation's southern border to confront what President Donald Trump called "a national emergency," much is still unclear about their mission, including whether they would be armed,

Immigration officials are already taking action along the Texas-Mexico border. The American Civil Liberties Union has already filed at least one lawsuit.

President Donald Trump has declared a national emergency on the border with Mexico, saying “America’s sovereignty is under attack.”

Migrants in Mexico who were hoping to come to the U.S. are adjusting to a new and uncertain reality after President Donald Trump began cracking down on border security

It's the first batch of troops deployed to the border following President Trump’s executive order demanding an immediate crackdown on immigration.