Perhaps because they realized that the requirement was already there, and there was no point in putting it in twice? The requirement to verify eligibility is in the proposed law - HR 3200 says, in Sec. 241(b)(1), pg 130, that "the Commissioner shall establish a process whereby, on the basis of information otherwise available, individuals may be deemed to be affordable credit eligible individuals." Or maybe they simply realized that complete and accurate verification is impossible, and I wish the Commissioner luck.