Actually, Trump urged Cruz to obtain a declaratory judgment in federal court. Federal courts will not issue a declaratory judgment unless there is an actual case or controversy involving the requesting party, as opposed to a theoretical controversy.
So until there is an actual case or controversy involving Cruz in the federal judicial system, Cruz can’t obtain such a declartion.
Cruz supporters keep saying that. Where are y'all getting that from???
This is clearly a controversy...it's in the papers with legal experts lining up on both sides. And clearly Declaratory Judgment is designed to be issue prior to a lawsuit. As clearly stated in the wikipedia article I posted.