What do you know about this?

It appears — and happily so — that Donald Trump’s penchant for refusing to apologize when he messes up isn’t contagious among fellow Republican politicians.

One of them, U.S. Sen. John Kennedy of Louisiana, said over the weekend that Ukraine might have attacked our electoral system in 2016. The TV interviewer, Fox News’s Chris Wallace, asked him directly who he thought was responsible for the hack into the Democratic National Committee server. Kennedy said it could have been Russia, or it could also have been Ukraine.

Wallace pushed back, telling Kennedy that the U.S. intelligence community said uniformly that Russia was responsible. Kennedy didn’t take the bait in the moment.

The “Ukraine mighta done it” narrative has become a talking point among GOP politicians seeking to divert attention away from Russia and from Trump’s bizarre affection for Russian strongman Vladimir Putin.

Then Kennedy had second thoughts about what he told Wallace and told CNN’s Chris Cuomo he was wrong. Sen. Kennedy said he misheard Wallace’s question, then affirmed that Russia was responsible.

That didn’t hurt a bit, I’ll bet.

If only the nation’s top Republican, Donald Trump, could swipe a page from Kennedy’s book of contrition.

Alas, it won’t happen. Not ever.