4. Operation Fast and Furious.
Fund and Van Spakovsky write:
The Obama Justice Department lost track of thousands of guns it had allowed to pass into the hands of suspected smugglers, in the hope of tracing them to Mexican drug cartels. One of the guns was used in the fatal 2010 shooting of Border Patrol Agent Brian Terry. Congress held then-Attorney General Eric Holder in contempt when he refused to turn over documents about the operation.