Here's a question for you: Suppose there's a guy that insults your co-workers on a regular basis. He makes fun of their looks. He gives them insulting and sexist nicknames. And suppose one day you have, say, a company picnic or event. Do you invite that guy -- who doesn't even work with you -- to give a speech?

If you're the House Republicans, the answer is an enthusiastic, 'Yes!' At the Capitol today, House Republicans rallied against health care - and featured radio host Mark Levin. What has Levin said about the Republicans' colleagues in the House and Senate?

• Levin on “stretch” Pelosi: “One more face lift and ... those eyes are going to pop right out”

• Levin: SF will keep re-electing “shrill” Pelosi “as long as her makeup holds up”

• Levin said of “Stretch” Pelosi's need for “big military jet”: “She wants a really, really big one”

• Levin said of Pelosi: “You could bounce a dime off her cheeks”

• Levin attacks former Senator Hillary Clinton: “Her thighness”

• Levin attacks Sens. Boxer and Kerry: “two complete morons who look like they come straight out of ... The Addams Family"

• Levin calls Sen. Mary Landrieu, “Landfill of Louisiana”

And it's not just sexist attacks on women serving in the House and Senate:

• Levin: Sotomayor is “Ruth Bader Ginsburg plus about 50 pounds”

• Levin to female caller: “I don't know why your husband doesn't put a gun to his temple. Get the hell out of here”

• Levin on his “National Organization of Ugly Women” remark: "[F]or now on, it's the National Organization of Really Ugly Women"

Levin, by the way, stands by and is proud of his attacks. Indeed, he regularly repeats many of them.

(Levin, standing at a healthcare.gop.gov podium, with House Minority Leader John Boehner listening)

Again, it isn't like Mark Levin rushed the stage and grabbed a microphone. “The great one,” as Levin fans such as Rep. Michele Bachmann call him, was an invited guest.

Levin's incendiary attacks aren't a secret. While we know Republican members and their staff aren't quite tech-savvy, the invention called Google has been around for a while. Meanwhile, some prominent Republicans - not in the House GOP caucus, apparently - have been raising concerns about Levin.

And there's the big question: Given the knowledge of Levin's constant sexist attacks against House and Senate members, why did Congressional Republicans roll out the red carpet for Levin?