Michigan Congressman Thad McCotter's attack on Catholics United has prompted MSNBC's Keith Olbermann to name McCotter the "Worst Person in the World." Last month, Congressman McCotter compared Catholics United to "the devil" for daring to challenge his vote against expanding health care for uninsured children.

Olbermann's response: "How I know they're not right, Congressman - and you're the devil?"

We're not backing down. Today, Catholics United expanded its ad campaign and is currently running this TV ad on CNN and FOX News in McCotter's district.

Click here to view the ad