U.S. President Donald Trump says he would "totally be willing" to partially shut down the government next week if he does not get more funding for a wall along the U.S.-Mexican border to thwart Central American migrants from entering the country. The U.S. leader told the Politico news site he is insisting that $5 billion for wall construction be included in measures Congress needs to approve to keep several federal agencies open after their current spending authority expires December 7. Oppos...