Former Georgia congresswoman who made headlines when she suggested President Bush had advance knowledge of the Sept. 11 terrorist attacks stopped in Wisconsin on Tuesday as part of her run for president.

Cynthia McKinney is seeking the nomination of the Green Party, which gained fame when Ralph Nader ran as its candidate for president in 2000. Kevin Barrett, a former University of Wisconsin-Madison lecturer who taught that the U.S. government was behind the Sept. 11 terrorist attacks, attended her news conference along with about 50 others.

"I asked a very innocent question," McKinney said Tuesday. "I asked what did the administration know and when did it know it about the tragic events of Sept. 11, 2001. And I was excoriated."

One of her final acts in Congress was to introduce a bill to impeach Bush, saying he misled Congress into approving the war in Iraq and violated the law by secretly spying on citizens.

McKinney, who served five terms in Congress as a Democrat representing a district east of Atlanta, said she is pushing a true peace agenda and advocating "radical common sense."

"It is not unusual to want a government that is truthful," she said.

McKinney left Congress after losing the Democratic primary in 2006 only months after a highly publicized scuffle with a Capitol Hill police officer. She served in Congress from 1993 to 2003, and from 2005 to 2007. She switched to the Green Party shortly after her defeat.

McKinney is one of at least seven Green Party candidates for president. The party will select its presidential nominee at its July 10 convention in Chicago. That person will appear on the ballot in Wisconsin for the general election.