Last updated on: 1/25/2016 | Author: ProCon.org

UPDATED: Immigration Timeline

– Read the history of legal and illegal immigration to the United States from colonial immigration in 1607 to the latest executive actions on immigration by President Obama. Our timeline also includes the 1790 Alien Naturalization Act, which was the first set of rules for granting US citizenship, and the 2006 Secure Fence Act, which authorized the construction of a physical border along the southern border with Mexico.