If he doesn't respond, legally he admits to all the requests for admissions of Berg's suit. However, if the judge dismisses the suit for any reason, that won't matter. That's what happened in district court when Berg was denied standing.
So, obviously, it is dangerous not to respond. Most think Obama's lawyer was incompetent for failing to respond and filing a Motion for Dismissal instead. Had the judge acceded to hearing the case, Obama would have been in quite a pickle.
No one can tell you really what's going to happen, because the Supreme Court is unpredictable. IF there are five justices with common sense and faithfulness to the Constitution on this point, then they will accept the suit and Obama will finally have to produce all relevant documents, including his birth certificate.
That's a big IF.
Thanks, very much,under two weeks now.