VIDEO: Gov. Tom Corbett compares gay marriage to marriage between siblings.
PHOTO: Pennsylvania Governor Tom Corbett's (left) handling of Jerry Sandusky's criminal case is under investigation.
PHOTO: Pennsylvania Governor Tom Corbett is interviewed on "This Week" about the fallout from the Penn State abuse scandal.
PHOTO: Gov. Tom Corbett of Pennsylvania delivers an address at the Flight 93 National Memorial Service in Shanksville, Pa., Sept. 11, 2011.