 The politics of language is a major political issue in the state, especially in regard to language policy controlling the teaching and official use of immigrant languages.As a result of the state's increasing diversity and migration from other areas across the country and around the globe, linguists began noticing a noteworthy set of emerging characteristics of spoken English in California since the late 20th Century.This dialect, known as California English, has a vowel shift and several other phonological processes that are different from the dialects used in other regions of the country.