Then he’s retiring from politics because he is NEVER going to be President.
He is 'retiring' the same way Barney Frank is, he is being redistricted out. He would have to compete outside his little safe haven if he had to run again. TX 14 is changing to not just be the Galveston/Friendswood area but also now cover more of Brazoria and Jefferson counties.
This is of course, if passed. The redistricting is being challenged by liberals who are getting judges involved so TX 14 may end up staying the same.. which would be funny if Paul does decide to run again if his district doesn't change after all.