The Pentagon is sending 3,750 additional U.S. forces to the southwest border with Mexico for three months to support border agents, the Department of Defense said on Sunday. The deployment will raise the total number of active-duty forces supporting Customs and Border Protection agents there to about 4,350, according to the DOD. President Donald Trump's demand that money for a border wall be included in spending legislation prompted an impasse with Democrats that led to a 35-day partial federal government shutdown. If lawmakers cannot reach a deal by Feb. 15 another shutdown could happen. Trump has also threatened to declare a national emergency if he does not get the funding. “I don’t take anything off the table,” the president said in a CBS interview on Sunday.