The United States gained at least two new citizens this week.

They are Viktor and Amalija Knavs, natives of Slovenia in central Europe. Oh, yes. They are the parents of first lady Melania Trump.

I welcome them. They likely are fine folks. They will add to the rich texture of this nation of immigrants.

However, there’s this little catch: They became U.S. citizens under the same sort of system that their son-in-law, the president of the United States, continues to rail against.

He calls it “chain migration,” which allows people to enter this country with relatives in tow. You might have heard Donald Trump bellow how chain migration enables immigrants to bring their cousins, in-laws, all sorts of kinfolk. He wants to end it. Trump wants to limit immigration — even those who come here legally — to those who would qualify on “merit.”

I won’t condemn the Knavses for coming here. I welcome them. I know they’ll have a good life as Americans. They’ll be able to be a larger part of their grandson Barron’s life as he continues to come of age in that strange environment within the White House.

However, they might need to toughen their skin as they hear critics who ask aloud why they were able to come here under a policy that conservatives — led by the president — want to discontinue.

Oh, wait …