UPDATE:

When asked this morning on a Battle Creek radio show whether President Obama was born in America, and if he believed the president is Muslim, former U.S. Rep.

said he didn't know.

"We don't have enough information about this president," said Walberg, the Republican candidate who is challenging U.S. Rep.

, D, Battle Creek.

Later Thursday, Walberg issued a

saying Obama was "certainly an American citizen."

Walberg was congressman before Schauer defeated him in 2008. Also today,

that give Schauer a slight lead over Walberg.

It has been proven and stated

and

that President Obama was born in the United States.

And despite the fact that President Obama is Christian, a

found that one in five incorrectly believe he is Muslim.

Walberg went on to say in the interview that it's not the issue right now, because Obama is president.

"Right now, we need to make sure that he doesn't remain as president, whether he's American, a Muslim, a Christian, you name it," Walberg said.

You can listen to a shortened version of his appearance

, or the full conversation,

.