With the president set to unveil a major immigration plan tonight, look back at the tumultuous history of this issue in America.
1795 -- The Naturalization Act restricts U.S. citizenship to "free white persons" who live in America for at least five years and renounce their allegiance to their former country.
Victoria Sanchez photo
Oscar Flores photo
Tracy Lehr Photo
From Scott Gries/Comedy Central
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