Sen. Joe Manchin (D-W.Va.) on Thursday called for urgent action to resolve the “humanitarian crisis” along the border, and floated the idea of a 90-day moratorium on immigration as a way of sending a message that would discourage people from flooding the region trying to enter the United States illegally. Manchin, who was one of the first major Democrat lawmakers to break ranks with his party and start referring to the border surge as a “crisis,” toured the U.S.-Mexico border with Rep. Henry Cuellar (D-Texas) on Thursday. The pair took a helicopter and boat tour of the border with U.S. Customs and Border Protection (CBP) officials, visited the port of entry in Laredo, Texas, and ended the day at the Holding Institute, a nonprofit housing families that have made their way illegally into the United States as part of the surge. “Do we have a war zone, like some people call it? …