I read stuff into Dem's post that isn't actually there.
It's OK. I agree immigration must have a greater limit, but we should choose migrants according to their criteria - race could be a matter but it should not be the utmost one.
If we base immigration entirely based on race we could well be importing George Galloways (a Commie, but an Anglo-Celtic white) rather than Dinesh d'Souzas (an Indian, but a conservative). And it would spell disaster for the US.
My point was just that immigration laws aren't good just because they are immigration laws. If there was some mad Stalinesque dictator ruling Mexico, there would be an excuse for all Mexicans coming here. Unfortunately the law from Coolidge's day didn't take this possibility into account.