The Wisconsin Supreme Court voted to end an investigation into alleged campaign finance violations in Gov. Scott Walker's 2012 recall election campaign. Outside groups question the impartiality of some of the justices who voted in the case. Scott Walker’s presidential campaign has just begun, but on Thursday the Wisconsin governor received a boost from the Supreme Court in his home state. A ruling dismissed a three-year probe into alleged campaign finance violations by Governor Walker’s gubernatorial campaign and outside conservative groups. The so-called John Doe probe had launched in 2012, investigating allegations that the coordination between the organizations violated the...