Simple. Cruz wants Trump supporters for his presidential bid in 2020.
This and much like Sanders he was probably bought off/promised something beyond just appointments.
Just for shits & giggles, Brutha, what, exactly, was Bernie "bought off" with? I guarantee that if $hillary wins, she's going to freeze him out of everything. Rancid bitch simply scares him less than the blustering fuckwit. And I think that's by design of the both cunt AND the fool.