Concerns Over Kagan's Immigration Views Add To Debate Ahead Of Hearing

House Republicans want the Senate to grill Supreme Court nominee Elena Kagan on her involvement in a federal challenge to an Arizona immigration law, adding a new layer of questioning into the mix with Kagan's hearing set to begin Monday. The immigration issue would be one of several concerns that have developed among Kagan's critics in recent weeks. Though her nomination has been overshadowed in Washington by other issues ranging from the BP oil spill to the Afghanistan command shake-up, Republicans are looking to throw up hurdles next week to Kagan's confirmation. She may not be the most controversial nominee, but she's still got questions to answer and Republicans are not taking a filibuster off the table.