Arizona's New Immigration Law

[CRedskinsRule]

Originally Posted by SmootSmack

On this day in history

Immigration Law of 1924

So they list out each country and the number of available immigrant visas but there is no Mexico listed? I thought maybe at that time it was lumped with Spain but Spain had only 131. In fact, from what I see, no country in North or South America (including Canada) is listed. Does this mean immigration was not allowed, or that it was considered more or less "open borders" at that time?