Immigration law in the United States generally includes the rights and obligations of persons who are not U.S. citizens to temporarily visit or more permanently reside in the U.S.—and for federal and state governments to enforce immigration laws regarding visitors and residents.

Most immigration law consists of federal statutes and regulations—but many state laws impact both legal and illegal immigrants—including employment checks, E-Verify, law enforcement, driver's license requirements, public benefits restrictions, and more.

In Louisiana (LA), as in all states, immigration law is primarily governed by federal statutes and regulations, as the authority to regulate immigration is a federal power. This includes laws pertaining to visas, green cards, asylum, deportation, and citizenship. State laws in Louisiana may impact immigrants in various ways, such as through employment verification requirements. Louisiana employers are required to use the federal E-Verify system to check the work authorization status of new hires. Additionally, state law enforcement may cooperate with federal authorities in the enforcement of immigration laws. Louisiana does not have sanctuary policies that limit local cooperation with federal immigration enforcement. Regarding driver's licenses, Louisiana allows some non-citizens to obtain them, but applicants must provide proof of lawful presence in the U.S. Public benefits in Louisiana are generally restricted to legal residents, and undocumented immigrants are not eligible for most state-funded assistance programs.