Trump addressed this at his news conference today and ...
"Blood is thicker than water" actually means the opposite - "The blood of the covenant is thicker than the water of the womb."
But it was unfair, because I had no sarc tag :-) I'm for Trump, and though I like Cruz, I was making fun of those Cruz supporters who are defined more by their hatred of Trump than their love of Cruz.
Blood is thicker than water means you’d do anything for your family.. Even nominate her for SCOTUS!! He said she would be an excellent choice..