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Englishmen begin settlement in Jamestown, Virginia
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The first African slaves were imported for labor in the colonies
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The first U.S Naturalization Act was established that granted free white males and some women citizenship after two years of residency
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The U.S. acquires Colorado, Arizona, Texas, New Mexico, California, Nevada and Utah from Mexico. Mexican residents receive U.S. citizenship
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Promised land to citizens and immigrants at a cheap price per acre in hopes of encouraging westward migration
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Ellis Island officially stands as the immigrant entry checkpoint
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The supreme court confirms that all people born in the U.S are granted citizenship
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Thoussands of Mexicans cross the border into the U.S to avoid the war
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Limitation placed for immigration into the U.S.
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official establishment of U.S. border patrol against illegal immigration
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5,000,000 temporary workers were brought into the U.S to work on farms and railroads
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Allows prosecuted individuals to seek asylum in the U.S.
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Cuba allows 125,000 cubans to illegally depart for the U.S
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secretary of homeland security takes action to stop unlawful entry of undocumented immigrants and authorizes fencing along the U.S. Mexican border
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Arizona signs a controversial bill expanding the state's authority to combat illegal immigration
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President Obama allows undocumented immigrants who came to the U.S. as children to stay in the country
