He is, quite simply, a liar.

Here's What's Left: A liar and a coward (emphasis mine):

This is outrageous. The Vice President of the United States saying on national television that allegations of mistreatment at Guantanamo Bay are false. They are are not. He is, quite simply, a liar.

Indeed, Amnesty International's report contains numerous allegations by prisoners at Guantanamo Bay (scroll down to section 12 for starters), and I suppose, if, like the Vice President of the United States, you're not inclined to trust brown people, you might not believe a word of what any of the large number of them said. Surely, though, you would be less inclined to disbelieve your own Federal Bureau of Investigation:

[...]

The Vice President says that he doesn't take Amensty International seriously. Well, it's hard to take the Vice President seriously if he is so willing to lie about undisputed facts.

Frankly, I think that we need to take this creep quite seriously. This mendacious puppetmaster has done more damage to the U.S. than al Qaeda ever dreamed of doing.