Wherever he is, the 40th president of the United States, Ronald Wilson Reagan, is an unhappy man.

President Reagan once invoked what he called the 11th commandment, which is that Republicans shouldn’t speak ill of other Republicans.

So, what does Donald Trump do? He endorses candidates within GOP state primaries, and speaks badly of those he opposes.

The president did so again in Kansas, backing secretary of state Chris Kobach. What’s worse is that Trump threw the incumbent governor, Jeff Colyer, under the proverbial bus.

This is totally outside the political norm. Presidents usually don’t get involved in primary battles. They hold their political fire for the general election. They back whoever their party — Republican or Democrat — nominates and then campaign against whoever they face in on Election Day.

Donald Trump’s grip on the Republican Party is stronger than ever. He is demonstrating it now with his primary endorsement of Chris Kobach.

Wasn’t there a time when President Reagan was the GOP’s most beloved figure? If so, those days appear to be gone. I hope, for the party’s sake, they won’t be gone forever.

I’ll concede this final point: I didn’t vote for Ronald Reagan in 1980 or 1984 … but damn, I do miss him.