Which of the following is correct with regard to the powers of the government in the USA?

A) Congress may not enact legislation that affects the states

B) The federal government is based on a unilateral structure

C) The federal government is a government of enumerated powers

D) The federal government is all powerful except in cases of state criminal law

E) Legislation enacted by Congress does not need to be based on a specific power granted to the federal government by the Constitution.