In a complex sentence, the role of the subordinating conjunction and the dependent clause is to establish a time, a place, a reason, a condition, a concession, or a comparison for the main clause. The subordinating conjunction provides the bridge between the main clause and the dependent clause.
The definition of Act of Supremacy in the law of the United States, as defined by the lexicographer Arthur Leff in his legal dictionary is: An English statute of 1558 establishing the supremacy of the Crown in ecclesiastical matters.
It was not until the 1930s that the Court shifted its position and invoked the Supremacy Clause to give the federal government broad national power. The federal government cannot involuntarily be subjected to the laws of any state. The Supremacy Clause also requires state legislatures to take into account policies adopted by the federal government.