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America's Greatest Threat?

Tuesday, 1 May 2012 | 7:52 PM ET

Discussing whether the national debt or nation-building is the greater threat to America, with P.J. Crowley, Fmr. US Asst. Secretary of State; Gen. Barry McCaffrey, U.S. Army (Retired); Rep. Michael Grimm, (R-NY); and Sen. Tom Coburn, (R-OK).