What spheres of government has the ability to make immigration policy?

In the United States, Immigration policy is primarily shaped at the federal level, where Congress has the authority to create laws governing immigration. The executive branch, led by the President and the Department of Homeland Security, is responsible for implementing and enforcing these laws. Additionally, state and local governments can influence immigration through policies and practices, such as law enforcement priorities and access to services, but they cannot create conflicting immigration laws.