Since it is an instruction to Congress to act, they must know whether or not to act. They must know the answer to BOTH parts of the conditions, the death part and the shall have failed to qualify part. The only way Obama could have proven himself eligible is with a valid, legal birth certificate showing him to be at least thirty-five years old and also a natural born citizen. That he has yet to provide this even after all this time is proof that he does not have one. His fake pdf is not good enough. Congress simply did not do it's duty. This doesn't make Obama a legal President. It makes him a usurper to the office of President, in this case with the full knowledge of a sitting Congress.
So, my post #28 stands as written, relative to the headline, and your commentary was unhelpful.