The National Anthem in Foreign Languages Is Anti-Immigrant
The obvious pro-immigrant policy on the National Anthem is to sing it in English on the grounds that English is the only language our diverse immigrants have in common. Singing it in Spanish amounts to a claim that Hispanics belong here more than other immigrants. That's an anti-immigration policy that disapproves of people crossing, not borders, but oceans.
In related news, The Seattle Times reports that the U.S. government authorized a Spanish translation of The Star Spangled Banner in 1919. That's shortly before the gates slammed shut.