Former DHS chief Tom Ridge claims Bush officials tried to politicize terror alert level . Ridge says Rumsfeld , Ashcroft sought action after Osama bin Laden tape surfaced . Comment: Of those , 86 percent voted for Bush , 14 percent for Democratic candidate John Kerry . In new book , Ridge says incident led him to leave government .
Former DHS chief Tom Ridge claims Bush officials tried to politicize terror alert level . Ridge says Rumsfeld , Ashcroft sought action after Osama bin Laden tape surfaced . Comment: In new book , Ridge says incident led him to leave government .