reading recommendation on American political multilingualism?

I’m trying to find a book on the political history of multilingualism in the US; in other words, of why/when it started becoming acceptable (and in some cases required) for government works, electoral ballots, etc., to be written and printed in multiple languages. This is related to some of the talk about mozilla-as-social-movement that a variety of Mozilla folks have been talking and blogging about lately; I’m curious if some of the rationales and arguments used by supporters of multilingualism would be applicable to software. Anyone have any pointers? Thanks!