Reason Morning Links: Emails: ATF Used "Fast and Furious" to Push Gun Control, Elizabeth Warren Leads Scott Brown in New Poll, Jon Corzine "Simply Does Not Know Where The Money Is"

• ATF emails show the agency planned to use "Fast and Furious" to implement new gun control regs. 
• House Republicans grill Eric Holder on Fast and Furious today. 
• Elizabeth Warren is polling seven points ahead of Sen. Scott Brown (R-Mass.).
• Corzine's testimony to Congress: "I simply do not know where the money is, or why the accounts have not been reconciled to date." 
• Republican enthusiasm for voting in 2012 has fallen from 58 percent to 44 percent.  
• The State Department is keeping classified the 250,000 document leaked by Wikileaks. 

New at Reason.tv: "Craig Shirley: How Pearl Harbor—and December 1941—Made America a Global Power"