Obama, Homeland Security Chertoff and the Senate agree with the TWO US PARENT definition. Thomas said the SCOTUS was "evading" the issue. To me, that says they know something smells.
Roe v Wade smells up one side and down the other, yet what was the last SCOTUS decision regarding it? Stare Decisis! (Which means "Shut up and do what we tell you!" )
Throwing out the first "black" President is no little deal. Even if they agreed, I think they will chicken out.