Trump digs in on wall, as shutdown enters week three

President Donald Trump stood firm Sunday on his demand for billions of dollars to fund a border wall with Mexico, claiming "tremendous" support inside his camp on the contentious issue which has forced a government shutdown now entering its third week."We have to build the wall," Trump told reporters as he left the White House for the Camp David presidential retreat.One prominent House Democrat, Adam Schiff, immediately rejected the talk of a national emergency.