Breaking up is hard?
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.
The National Park Service turned 98 years old on Monday. Learn more about some of America's top national parks here.
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