Which legislation granted amnesty to millions of undocumented immigrants in 1986?

The Immigration Reform and Control Act (IRCA) of 1986 allowed many undocumented immigrants who met requirements—such as having lived in the United States since before 1982—to apply for legal status. This legalization program is often described as granting amnesty to millions. The Dream Act and DACA came later, and Arizona v. United States was a court case, not an amnesty law.

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