On Sunday, President Trump screened the feel-good Pixar movie “Finding Dory” for his family, staff members and their kids.

On Tuesday, press secretary Sean Spicer made it clear that Trump himself didn’t actually watch it; he merely introduced it and left when the flick started.

Why is it important that POTUS didn’t catch any of the undersea action? Maybe because the White House wants to make sure people know the commander in chief is hard at work. Or maybe because the movie’s plot — as recounted by its star, talk-show host Ellen DeGeneres, on Monday — stands against Trump’s immigration order.

“I don’t get political, so I’m not going to talk about the travel ban,” DeGeneres, who voices the movie’s protagonist, a fish named Dory, said during her show’s monologue. “I’m just going to talk about the nonpolitical, family-friendly, People’s Choice Award-winning ‘Fnding Dory.’ ”

DeGeneres explained that the film centers on a fish named Dory, who lives in Australia and is trying to reunite with her parents, who live in America.

“Dory arrives in America with her friends Marlin and Nemo, and she ends up at the Marine Life Institute behind a large wall, and they all have to get over the wall. And, you won’t believe it, but that wall has almost no effect in keeping them out,” she said.

More metaphor: “The other animals help Dory — animals that don’t even need her, animals that don’t even have anything in common with her,” DeGeneres continued.

She wrapped up the plot summary with a joke about how she next planned to “explain women’s rights” by talking about her 1996 box-office bomb of a comedy, “Mr. Wrong.”