Admission of guilt if you ask me.
Via Beltway Confidential:
A top official at the Department of Justice has decided to assert his Fifth amendment right not to testify after being subpoenaed by House investigators in the probe into Fast and Furious, the program under which the Obama administration knowingly allowed thousands of guns to flow into Mexico, where they wound up in the hands of Mexican drug lords. At least two of the guns turned up at the murder scene of a U.S. border agent.