UNDATED (WHBL) - Governor Scott Walker says he is glad the John Doe investigation is over, saying he doesn’t feel he owes anyone an apology. Milwaukee County District Attorney John Chisholm announced yesterday the secret probe had ended February 20th. No charges were ever filed against Walker, who had repeatedly denied he had done anything wrong. Six people were charged with crimes originating in their activities in the Milwaukee County Executive’s office while Walker held that position. The investigation into illegal campaign activity started in May 2010 and lasted almost three years.