There is total probability that Trump will not follow through on his campaign promises.
What’s in it for Trump once he’s fooled the public into electing him.
I do not trust this man to keep one promise, much less all of them.
He’s addressed many a contemporary concern with a verve that has Cruz and others playing catch-up.
Yeah there is a “chance” he might fail. Keep in mind that Cruz can’t cram anything past Congress that they utterly refuse, either.