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.
Oscar Flores photo
Photo courtesy: Direct Relief
Montana Maclachlan photo
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Al Hayat Media/CNN
Boy Scouts of America
Pete Souza/The White House
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