MADISON, Wis. (AP) — Gov. Scott Walker started making his top agency officials and staff members sign a pledge that they wouldn't do illegal campaign work during regular business hours just two months after the home of one his aides was raided by law enforcement officials. Walker spokesman Tom Evenson tells The Associated Press that Walker started requiring signatures on the "Ethics Policy and Professional Code of Conduct" beginning in November 2011. That was two months after FBI agents and other law enforcement officials raided the Madison home of Walker aide Cindy Archer as part of the investigation that involved illegal campaign work by employees of Walker's office when he was Milwaukee County executive. Evenson said Wednesday the raid had nothing to do with requiring signatures on the code of conduct.