Rep. Thaddeus McCotter, R-Mich., a five-term congressman who isn't well known on the national stage, is mulling a possible presidential run. "A decision hasn't been made, but it will be made soon.... I’m not going to put a timeline on it," he told the Daily Caller. McCotter has been working his way into the inner circle of the Republican leadership since his early support of John Boehner, R-Ohio, for majority leader in 2006. As Cook Political Report's David Wasserman writes, McCotter has few options if he wants to continue to climb: "Republicans haven't broken through at the Senate level in...