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Take our quiz: Your day in news, April 10

In this edition: Congress holds witness in contempt, the "Late Show" gets a new host, and another Obama nominee is in trouble.
Former Internal Revenue Service official Lois Lerner (C) exercises her Fifth Amendment right not to speak about the IRS targeting investigation, March 5, 2014.
Former Internal Revenue Service official Lois Lerner (C) exercises her Fifth Amendment right not to speak about the IRS targeting investigation, March 5, 2014.