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Clash at IRS hearing

7:16 PM ET Wed, 5 March 2014

A House hearing investigation into the IRS targeting conservative groups broke into a heated argument between Chairman Darrell Issa (R-CA) and Rep. Elijah Cummings (D-MD) moments after former IRS official Lois Lerner once again invoked her Fifth Amendment right, reports CNBC's Morgan Brennan.