"Gov. Scott Walker on Friday signed legislation that prohibits prosecutors from using secret John Doe investigations to review allegations of political corruption and misconduct of public officials."

"The bill, which passed the Senate and the Assembly along party lines this week, comes after two John Doe probes of Walker, his campaign and his aides. Walker was never charged."

ALSO: "The lead prosecutor in the halted John Doe probe into Gov. Scott Walker’s recall campaign had doubts about his legal theory in November 2013, a month after issuing nearly three dozen subpoenas and search warrants, according to documents filed Thursday in a related lawsuit...."