Every few years I try to write a column staking out a reasonable middle ground on immigration. After all, most big, important issues are clashes in which both sides have a piece of the truth.

The case for restricting immigration seems superficially plausible. Over the last several decades we’ve conducted a potentially reckless experiment. The number of foreign-born Americans is at record highs, straining national cohesion, raising distrust. Maybe America should take a pause, as we did in the 1920s. After all, that pause seemed to produce the cohesive America of the 1940s that won the war and rose to pre-eminence.

Every few years I try to write this moderate column. And every few years I fail. That’s because when you wade into the evidence you find that the case for restricting immigration is pathetically weak. The only people who have less actual data on their side are the people who deny climate change.

You don’t have to rely on pointy-headed academics. Get in your car. If you start in rural New England and drive down into Appalachia or across into the Upper Midwest you will be driving through county after county with few immigrants. These rural places are often 95 percent white. These places lack the diversity restrictionists say is straining the social fabric.