I don't really mind what he said about immigrants or McCain.
http://www.lapdonline.org/all_most_wanted
Many immigrants come here to bypass our labor laws, many companies hire only immigrants because they don't want to deal with minimum wage and all the other laws that can get them sued. Generally most Californians like immigrants better than the average Californian as they work and offer low prices, don't try and scam.
It has been reported that McCain spent 5 years as a pow, and it was used as a political statement that he endured all the torture.
http://www.history.co.uk/biographies/john-mccain
Trump, imho only wants to say he wants someone that wins for president, Joe Montana, Bruce Jenner, or Hank Aaron. Chris Kyle, or someone that did something extraordinary in combat. That is what he is trying to say.
What I don't like about Trump about is his China trade and currency ideas. China manipulating currency how? It is stronger than the dollar. The U.S. imposing minimum wage is our own fault. We need to fix the laws within the United States to compete with China, we have no right to subject China to our silly laws.