The U.S. military has operated as an all-volunteer force for more than 50 years, and any attempt to reinstate the draft requires a major act of Congress.

Military expands at border with Air Force controlling 250 miles in Texas, authorizing troops to detain migrants while civil liberties groups warn of Posse Comitatus violations.

Manhunt expands for Travis Decker, a military-trained survivalist accused of killing his three daughters, as authorities search Teanaway Valley and Blewett Pass.

The Pentagon will create two new military zones along the border with Mexico, U.S. officials said on Wednesday, a move that allows troops to temporarily detain migrants or trespassers.