President Trump ripped Minnesota Gov. Tim Walz as “seriously retarded” — and suggested Rep. Ilhan Omar “probably came into the USA illegally” —  in a rage-filled Thanksgiving message about immigration.

Trump, 79, hurled the insult as he accused Walz, who had been Kamala Harris’ running mate in her failed presidential election bid, of allowing an influx of hundreds of thousands of Somali migrants to take over his “once great state.”

“Somalian gangs are roving the streets looking for ‘prey’ as our wonderful people stay locked in their apartments and houses hoping against hope that they will be left alone,” he wrote in the blistering late-night Truth Social post.

“The seriously retarded Governor of Minnesota, Tim Walz, does nothing, either through fear, incompetence, or both.”

Trump also zeroed in on Minnesota progressive Omar, describing her as the “worst ‘Congressman/woman’ in our country” who is “always wrapped in her swaddling hijab.”

He then accused the Somalian-born lawmaker of “probably came into the USA illegally.”

Walz responded to Trump’s vicious attack by questioning the president’s own mental state.

“Release the MRI results,” Walz wrote on X, referring to the results of Trump’s latest medical checkup, which he touted at the time as “perfect.”

The wild rant came as Trump vowed to “permanently pause migration” from poorer nations in the wake of the Wednesday shooting of two National Guard members who were deployed to patrol Washington, D.C.

A 29-year-old Afghan national who worked with the CIA during the Afghanistan War is facing charges for the shooting.

“Only REVERSE MIGRATION can fully cure this situation,” Trump wrote.

“Other than that, HAPPY THANKSGIVING TO ALL, except those that hate, steal, murder, and destroy everything that America stands for — You won’t be here for long!”