And this coming from a guy that:

1) Graduated at the bottom of his class (894th out of 899) with so many demerits that one more would have gotten him tossed out. In fact, after a contraband TV was found hidden in a crawl space McCain was hit with the infraction that would send him home. Until another middie, who had never had a demerit, stepped up and took the fall for McCain.

2) While a trainee pilot dated an exotic dancer named "Marie the Flame of Florida"

3) He once showed up for a date so drunk, that he fell through the screen door. The parents called a cab, and ended that relationship permanently

4) Who on March 12, 1960 became "preoccupied in the cockpit, coupled with the use of a power setting too low to maintain level flight in a turn were the primary causes of this accident." In other words he crashed his first Navy plane while apparently hotdogging

5) Who in December 1961 was once again hotdogging in a Naval plane, and "admits this incident was caused by his own daredevil clowning." He flew so low that he cut power lines to an entire city, sparking an international incident. And his Admiral father had to sneak him out of the Europe so that he couldn't be held accountable for his actions.

6) Nov. 28 1965 McCain 'borrowed' a Navy trainer plane to attend a football game, and pick up Christmas presents in Philly. On the return leg of his personal 'charter' trip, he had to eject and crashed his tax-payer funded plane

7) Then there was the highly controversial Forestall incident where 134 sailors died. A rocket hit another plane, spilling fuel all over the deck, then fell into the sea. A bomb was somehow released from McCain's plane and exploded 89 sec. later. McCain claimed his plane was also hit causing the bomb to release. But video doesn't back that up. Even if McCain didn't panic and trigger his bomb, he still left the deck and did not help to extinguish the flames that eventually consumed the carrier. He even claimed to be wounded, despite a letter from his father stating "Happily for all of us, John came through without a scratch." He also left the ship without being granted permission. His father then arranged for him to go to Europe where he spent the next few months partying.

8) Then a couple months later on Oct. 26, 1967 he returns to combat and is shot down. Reports are that he had finished his bombing run, and had returned to strafe the local population, rather than returning to the carrier

9) Once captured he begins to cooperate with the Viet Cong, to gain favorable treatment. In fact, he was nicknamed 'Songbird' on June 5, 1969 by the NY Daily News

10) And when he returns from Vietnam in '73, a shell of his former self, he dumps his wife. Who had been in an horrific car wreck, and as bad of shape as McCain was in. But he begins cheating on her, and once he meets a wealthy heir to a beer baron, he abandons his wife. He angered the Reagans and Ross Perot so much, that they stepped in to pat for her medical care. Then with all his new found riches, he also abandons his military career to start his political run

I voted reluctantly for him, but theres so much unacceptable behavior in the mans past, he certainly has no lofty perch from which he had any right to denigrate Trump from. It sounds more like jealousy to me, rather than principle