Pennsylvania Gov. Tom Corbett says he's said all he's going to say about his statement comparing gay marriage to sibling marriage.
The Republican was asked repeatedly about his comments Tuesday during an impromptu news conference after touring a Caterpillar Inc. facility in the York suburbs.
Corbett says he has publicly apologized and that his apology was heartfelt. He says he can't control whether people accept it or not.
The first-term governor is up for re-election next year.
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