MADISON, Wis. — Gov. Scott Walker is refusing for a second time to say whether he believes in the theory of evolution.

Walker told reporters on a call Thursday from London where he's on a trade mission that his position "isn't an important part of being governor." His comments came a day after he declined to answer a question about it following a speech at a London think tank.

Walker says he stands by a statement his political organization issued that "both science and my faith dictate my belief that we are created by God." He says faith and science are compatible and the media is getting distracted with the issue.

Assembly Speaker Robin Vos said Thursday he believes in evolution. So did Assembly Minority Leader Peter Barca.