Federico de Jesus owes Victor David Hanson an apology. De Jesus, a staffer for House Minority Leader Nancy Pelosi, falsely accused Hanson, the distinguished author of the just-published book "Mexifornia," of racism and xenophobia at a recent Capitol Hill briefing. During his introduction, Hanson, a scholar of ancient Rome and Greece, was aptly described as "a classicist." De Jesus somehow interpreted that to mean that the author had a white "classist" bias against immigrants. Pelosi's aide, who somehow earned a diploma without being able to make a distinction between a classicist and a classist, got ugly with Hanson and stormed...