Walker was also asked by The Washington Post whether the president is a Christian.
They should ask Obama that, but they know he would lie.
The fact that Walker did not answer isn't unsettling at all. "I don't know" is the right answer and tells the story in its entirety.
In asking that however they acknowledge that whether Obama is a Christian or not is not known.
Logic, guided by the knowledge that he is at least a Socialist (if not at outright Communist) would say that he is an atheist.
Then there is the fact that the only written record available which connects Obama (Barry Soetoro) to a religion, says that he was a Muslim.
So, questions regarding Obama's religion (or lack of it) are valid questions, but they don't ask the only individual that can answer it because they know that he will lie.
They ask Walker thinking that they have a "gotcha" question to trip him up with, but they are too dull-witted (sad thing to say about "journalists") to understand that their asking the question
is the story, since (to the best of my knowledge) there have never been questions about a President's religious beliefs prior to this President.