Misusing emergency powers will open the door to further such abuses by this president—or a future one, writes Elizabeth Goitein.

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,

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