I think it is 216 based on teh HealthCare vote
one half of 435 is 217.5 so if all of the members vote, 218 is required. The tougher game is in the Senate. 60 votes are required to invoke cloture on the inevitable filibuster. The companion bill,
S.446 has 37 Senators signed on.
Both bills are stagnant: Senate bill in committee since 2/27. House bill referred to SUBcommittee on 1/12. With the healthcare bill now passed by the House, Trey Gowdy might have time to consider this bill.