Add MSNBC commentator Chris Matthews to the ranks of people who are demanding to see President Obama's long-form birth certificate—not because he doesn't believe the president is American, but to quiet the "birthers" who don't believe it. "I am not a birther, I am an enemy of the birthers," Matthews said. Matthews referenced a poll that shows that less than 58% of Americans believe Obama was born in the US. "Are you saying 43% of the country is incorrigibly stupid, or resistant to truth?" he asks. To watch the Matthews video, click here.