Cruz hasn’t been shy about his 2020 plans, no matter who is president. If I ran the RNC, I would’ve yanked his slot, but then again, who would’ve filled it? Maybe Trump would’ve finally gotten his fervent wish to get murderer Don King his speech. Alas, it wasn’t meant to be.
In any case, don’t expect an endorsement. It was hard enough for him to merely “congratulate” Trump.