Darrell Issa

The man driving the investigation into the General Services Administration, California Republican Rep. Darrell Issa, took the top seat on the House Oversight and Government Reform Committee after the GOP won a majority in 2010.

Issa has led several splashy investigations since. But he's also been dogged by allegations of his own.

Issa has made news in recent months by threatening to subpoena Attorney General Eric Holder, and by calling a panel of only men to talk about women's contraception.

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