Billionaire, reality star, and perennial possible candidate for a series of political jobs Donald J. Trump isn't quite sure how congressional leadership works, but he definitely thinks Sen. Mitch McConnell should be in charge of something. Trump dipped his toes into the close Senate race in Kentucky between incumbent McConnell and Democrat Alison Lundergan Grimes. The problem is, he nominated McConnell for a job he probably doesn't want — speaker of the House:The Senate, the body McConnell is in, has a majority leader. That's Democrat Harry Reid's job. The leader of the majority party in the House is the speaker....