Pressure grows to move Department of Homeland Security bill past Democratic filibuster.
A bloc of leading conservatives are splitting from the Republican Study Committee.
Rep. Mick Mulvaney said impeaching Obama would benefit Dems in the midterms.
Insiders doubt Camp's plan will make it to the House floor.
The lawmakers have criticized the Republican Study Committee as too cozy with leadership.
Rep. Mick Mulvaney said the influx would cause big problems for school administrators.
Prime Minister Enda Kenny attended a Washington fundraiser for Tea Party Rep. Mick Mulvaney.
Rep. Mick Mulvaney wants to amend the Constitution to limit service to 24 years.