Vice presidential hopeful, Minnesota Gov. Tim Walz, again called himself a 'knucklehead' as he was quizzed by 60 Minutes ...

Tim Walz was little-known outside Minnesota just two months ago ... He recently referred to himself as a "knucklehead," ...

Eventually even CNN couldn’t ignore the truth, and exposed Walz’s falsehood about being in Hong Kong during the Tiananmen ...

Minutes correspondent Bill Whitaker grilled Tim Walz over whether he could "be trusted to tell the truth" following his ...