THe GOP is playing a different game than Trump OR Cruz. They are playing to hold onto the control and power and money and influence they have enjoyed for decades.
The strategy clearly is to use Cruz and to a much lesser extent Kasich and Rubio to keep Trump from 1237. Cruz’s main usefullness is to pull delegates away from Trump.
They know they can easily take Cruz out with an eligibilty lawsuit.
It would not surprise me if they have proof of Ted’s mom’s Canadian citizenship before Ted was born. That would be a slam dunk campaign killer.