Yes. U.S. Constitution Amendment 20:
3. If, at the time fixed for the beginning of the term of the President, the President elect shall have died, the Vice President elect shall become President. If a President shall not have been chosen before the time fixed for the beginning of his term, or if the President elect shall have failed to qualify, then the Vice President elect shall act as President until a President shall have qualified; and the Congress may by law provide for the case wherein neither a President elect nor a Vice President elect shall have qualified, declaring who shall then act as President, or the manner in which one who is to act shall be selected, and such person shall act accordingly until a President or Vice President shall have qualified.
No positive proof of eligibility shown to date means "failed to qualify." Now what?
My guess is Obama is going to drag this out as long as he can keep stealing OUR money. His strategy will be to next claim that he never posted the BC. Somebody else put it on the website. Along with the letters of request. Obama will deny until he is hung for treason.