It has everything to do with Trump! Cruz could not back Trump for the obvious reason -- he should never be President. 16 people ran for the job. What was the likelihood Republicans would vote for a man who doesn't know how to check his emotions and would think a wall is going to stop illegal immigrants?
I really never thought America would come to this terrible choice in my lifetime. I thought at least a small majority of Americans used their brains, especially conservatives. Obviously, so did Cruz.
So, again? How was Cruz supposed to control The Donald, since you seem to think that makes it different.