I am just as confused as you are. You would think that somewhere along the line that he would have had to show his birth certificate to the Federal Election Committee.
This apparently has not happened because this would be not be an issue. Why file a motion in federal court on something that should be in someones file at the FEC. Why would a Hillary supporter file it? Why not some republican??
This leads me to believe that the republicans had nothing to do with it because they much rather run against Obama then Clinton. Another reason they would not be behind it is, say they lost. If Obama is not eligible and they can prove it then they can always challenge the election. Get out of Jail card so to speak.