I’m guessing Trump had a big belly-laugh when he learned of this tweet. Great reply by Cruz.
Trump/Cruz 2016
I'm guessing you don't know the context Donald used, which was the Cruz could not get along with Mitch McConnell and Harry Reid. Doesn't sound like a belly laugh to me. There are high fives going on in one of these men's HQs today....take a wild guess which one.