<human>:  What are the immigration laws in the US?
<bot>: The immigration laws in the United States are complex and ever-evolving. In general, the Immigration and Nationality Act (INA) regulates immigration to the United States. The INA allows foreign citizens to enter the U.S. as visitors, temporary workers, and permanent residents. It also sets forth the conditions and criteria for foreign nationals to successfully gain citizenship. In addition, U.S. immigration laws establish procedures and processes for asylum seekers and refugees, as well as protect against illegal immigration.