Senate Minority Whip John Thune will be the new Republican Senate leader and the majority leader of the upper chamber in the new Congress.  In January, he will succeed Senate Minority Leader Mitch McConnell, R-Ky., who is the longest-serving party leader in Senate history.  "I am extremely honored to have earned the support of my colleagues to lead the Senate in the 119th Congress, and I am beyond proud of the work we have done to secure our majority and the White House," Thune...