At a recent speech in Virginia, Attorney General Jeff Sessions proclaimed that undocumented immigrants in Arizona were more likely to go to jail than U.S. citizens. His source was a study by the Crime Prevention Research Center.
But there was a problem. That study had a fatal flaw that undermined its conclusion. In fact, the majority of literature on the subject actually shows the reverse.
This isn’t the only example of an analysis gone awry. In fact, faulty research is common in all the sciences. And that’s particularly worrisome in the medical sciences.