Wisconsin Gov. Scott Walker acknowledged in a CNN interview that in the past he had expressed support for a pathway to citizenship for illegal immigrants, but said that he wasn’t talking about amnesty at the time.

In an interview aboard his campaign trailer that aired Sunday on CNN’s “State of the Union,” Dana Bash pressed Walker about his shift from somebody who once said a path to citizenship for illegal immigrants “made sense” to a presidential candidate talking about restrictions on legal immigration. She asked whether such shifts undermined his pitch to voters that he’s somebody who stands up for his principles.