Since 1790, with the passing of the Naturalization Act there had been a series of laws which were passed in US to effectively deal with the immigration laws in the country. The modern law of immigration started with the passing of the Immigration and Nationality Act of 1952 which is also known as the McCarran Walter Act.
The US Department of Justice had said in a court filing that the Alabama Immigration Law is unconstitutional and deprives human of the most basic needs
The US Department of justice filled a court injunction against an immigration law in South Carolina on Monday by saying that the measure passed in South Carolina this summer is unconstitutionally pre-empts federal authority. But the United State constitution forbids South Carolina from supplanting the federal government’s immigration regime with its own State-specific immigration policy.