Are you really that obtuse? It's not Cruz's choice. It is the President's choice. And once the President makes that choice, there is no other candidate to support. It's not a matter of kissing party butt. It is a matter of supporting your boss. Bush chose Roberts.
And Cruz could have held on principle and kept his mouth shut. Instead, he throws in with the establishment and supports Roberts who gave us one of the worst decisions to ever come from the court.