The American Thinker does some deep thinking: 

These committee chairmen can also help stop the Obama agenda.  By calling hearings and issuing subpoenas for officials to testify, a chairman can tie up the working day for this czar or that czarina.  One witness who might be hauled before House committees is Elizabeth Warren, who circumvented the Senate confirmation process when she was named as the “special adviser” to a brand new Consumer Financial Protection Agency.  Her appointment elicited howls of protest from Republicans, given her left-wing views and the powers of this new agency.  Now their howls will be heard.