Remember that song, "I'm just a bill... Sitting here on Capitol Hill..."? It's come in handy over the last week or two in trying to follow this back an forth over FISA. The Senate passed an update to the Foreign Intelligence Surveillance Act that would allow the government to wiretap suspected terrorists and grant retroactive immunity to phone companies that helped the government after 9/11. The President backs the bill, and is ready to sign. But, the House refused to grant that retroactive immunity (if FISA is Greek to you, read Ari Shapiro's explainer) and is still in a stalemate with the White House. Why all the fuss over immunity? We'll find out on the show today. The Assistant Attorney General for National Security at the Justice Department will explain the government's position, and take your calls. And we'll hear an argument against offering retroactive immunity to phone companies. Here's the question for you: Do you care what happens with FISA?