This Halloween, Sean Duffy is sporting his Joe McCarthy mask

Give Sean Duffy credit: he's been studying up on another legendary Wisconsin loyalty expert

- - Joe McCarthy.

So while RoJo is definitely Trump's Wisconsin bullpen ace, former log-rolling champion, reality TV show personality and ex-GOP Congressman Duffy is a late-season call-up who could throw an inning or two.

#FireSeanDuffy trends on Twitter as former congressman faces backlash for criticizing Lt. Col. Alexander Vindman

The Washington Post has an expanded story.

The fundamentally Un-American attacks on Alexander Vindman

On Tuesday morning, the rhetoric from Trump's defenders was more explicit....

On CNN, former congressman Sean P. Duffy (R-Wis.) suggested that Vindman’s birthplace was important.

“It seems very clear that he is incredibly concerned about Ukrainian defense,” Duffy said. “I don’t know that he’s concerned about American policy....

(Of course, Ukraine’s defense is still U.S. policy.)

“...We all have an affinity to our homeland where we came from,” Duffy continued. “Like me, I'm sure that Vindman has the same affinity.…He speaks Ukrainian. He came from the country and he wants to make sure they're safe and free."

Asked whether Vindman was looking out for America first, Duffy demurred.

Final observation: What's gone haywire at CNN? Isn't one version of "Fox & Friends" enough?