I don't really expect David Letterman to challenge his political guests and, apparently, neither does Nancy Pelosi. Appearing on the Late Show on Tuesday, Pelosi got away with rhetorical murder implying that George Bush wants to "phase out" Social Security altogether, Democrats really want to secure our borders, the military barely has any combat ready units, and terrorists don't really care about killing people, they just want to instill fear and thus, George Bush is playing right into their hands.
Video available here.
Oh, and in case you weren't aware, Nancy Pelosi is the ultimate security mom.