Obama is NOT eligible to be President. His "Birth Cerificate" is a forgery.
Therefore, every thing he did is invalid, including his appointments of Kagan and Sotomayor.
True Obama is not eligible, but where you going to find anybody in authority to act on that? Maybe this TN judge that has called on the courts to define "natural born" will act on it, but I wouldn't hold my breath. Congress is scared to do the right thing and so is SCOTUS and the rest of the judiciary. Even state legislatures and judiciary seem to be scared of the eligibility issue.
If there is any resolution while Obama is still in office, it's more likely to be a weakening of the constitution to define Natural born = native born.
That's why we have to fight the smaller battles instead of throwing our hands up and hoping Obama and all ills associated with him will just go away.