What laws control immigration to the United States?
Immigration to the United States is controlled by federal law, most notably the Immigration and Nationality Act (INA). The INA is implemented by several federal agencies. The most prominent of these is the Department of Homeland Security (DHS). DHS houses U.S. Citizenship and Immigration Services (USCIS); Immigration and Customs Enforcement (ICE); and Customs and Border Protection (CBP). These three subagencies are responsible for the enforcement of immigration law, plus making decisions on applications for immigration benefits. However, a number of other federal agencies play a role in implementing U.S. immigration law, including the Department of Justice, the Department of State, the Department of Health and Human Services, and the Department of Labor.