At Israel's request no doubt.
"The US State Department won a Muzzle for disinviting a Palestinian political cartoonist from a government-sponsored conference that was to highlight, ironically enough, the importance of free speech and freedom of the press. Weeks before the program, State Department officials informed Majed Badra that he was no longer welcome after they found what they regarded as anti-Semitic cartoons on his website....
--more--"
