Defending the Constitution?

From today's Findlaw article on the resignation of not-my-president's lawyer: "Harriet is one of the most beloved people here at the White House," [Tony] Snow said, adding that she was a scrupulous lawyer who aggressively defended the U.S. Constitution.

Would someone please explain to me how Harriet Meirs, who stood by as not-my-president lied to get us into a war, lied to subvert constitutional rights, and lied to wrestle two elections, could be described as someone who "aggressively defended the U.S. Constitution?" Boggles the mind, I tell you.