Answer:
Slavs
Explanation:
The Slavs are an Indo-European people whose origin lies in Eastern Europe. They became the dominant group of people in Eastern Europe shortly after the fall of the Roman Empire, although they had to share and compete for this land with other groups like the Magyars, the Baltic Peoples, and the Finno-Ugric Peoples.
The Slavs have several subgroups, essentially East Slavs: Russians, Ukrainians, Byelorussians, West Slavs: Poles, Czech, Slovaks, and South Slavs: Serbs, Bosnians, Croats, Slovenes, Montenegrins, Macedonians, and Bulgarians.
Congress would most likely rely on the following:
The Supremacy Clause of the United States Constitution declares the laws of the Constitution as supreme over state laws. In the case of conflict, federal law takes precedence over state laws and state constitutions. This cqn be found in Article 6, Clause 2 of the United States Constitution.
States would most likely rely on:
The nullification theory allowing states to nullify federal laws they find as unconstitutional, or interposition the right of a state to interpose between the states citizens and the federal government.