Obama, Clinton Camps Clash Over Texas Caucuses

Texas Democratic Party warns caucuses could be disrupted after Clinton aides threaten lawsuit over party's complicated delegate selection process. Reaction from Clinton spokesman Elleithee: "No legal action is being taken." Read full response. On conference call, Obama surrogate accuses Clinton camp of trying to conceal unflattering results. And: Chelsea Clinton headlines $200 "cocktails and conversation" fundraiser in Dallas.