Derb, don’t play innocent. You know perfectly well what the arguments are against a doctrine of preserving ethnic balance — that said doctrine would have kept Catholics and Chinese out in the 1850s and Jews out in the late 1800s and early 1900s, when immigration levels were actually far higher in percentage terms than they are today. If you want to make the case that immigration is a threat to national security, that’s fine. That we cannot digest the number of immigrants we have, fine. That at a time of multiculturalism, bringing in millions of new immigrants who are not forced to become Americans threatens national identity, fine. But maintaining “ethnic balance” is not fine. It is chillingly, horrifyingly not fine.