Host Nicole Wallace posed an excellent question (at approximately 5:52 of the video here) on Wednesday's Deadline: White House,. Discussing President Trump's recent tweets about the late John McCain, she asked "why isn't there a political price to pay for being a wuss?"
The President pays no political price for being a "wuss" because he doesn't seem to be a wuss. Looked at objectively, of course, he is weak; but rationality and objectivity often are thwarted by subjective impression. Among the reasons that Donald Trump has been able to convey the image of strength rather than being recognized as a "wuss" are:
1) Trump's praise frequently emphasizes strength. The President described Putin as "very, very strong" after the two spoke together and and Trump has said admiringly that Putin "has very strong control" over Russia. Kim JongUn "is the head of a country and I mean he is the strong head." In regard to Egyptian strongman el-Sisi, "the United States has, believe me, backing, and we have strong backing." It's part of the reason that Trump recently warned "I can tell you I have the support of the police, the support of the military, the support of the Bikers for Trump – I have the tough people, but they don’t play it tough — until they go to a certain point, and then it would be very bad, very bad.'
2) Trump's criticism often pertains to weakness, as when Senator Graham in January 2016 endorsed John Edward Bush ("JEB") and Trump responded in part "His thinking. He says, ‘I know so much.’ He knows about the military? I could push him over with a little thimble.” More famous was Trump remarking, while campaigning the previous summer for the Iowa primary "He’s not a war hero. He was a war hero because he was captured. I like people who weren’t captured.” The implicit message: "John McCain is a loser. I like winners like myself."
3) Trump is big. He is 6'3" and not skinny, and is an imposing figure physically. (Supporters of Pete Buttigieg, take notice.) Reagan, Clinton, Bush 41, and Obama all have been tall. George W. Bush was short- but with his swagger knew how to wear a flak suit far more effectively than, say, Michael Dukakis knew how to sit in a tank.
Having died, John McCain has (in the common phrasing) "lost his life." He cannot defend himself just as none of us will be able to once we have lost our lives. For a weak man whose popularity is founded on an appearance of strength, there can be no more inviting target than an individual who cannot defend himself.
Donald Trump realizes his best strategy is to punch down, and in so doing he not only demeans the late Arizona senator, but reinforces a facade of strength. For America's finest actor- perhaps ever- it his his greatest role.