Cruz is confused or not truthful in that clip as Trump has made it clear that he does not think socialized medicine would not work here. In fact he wants people to be able to buy insurance across state lines for competitive rates. Potty mouth or liar which is worse.
I was once open to voting for Cruz, but after learning more and more every day how dishonest and deceitful he really is in his core, I will never vote for him. Cruz is working overtime for "the father of all lies".