Federal law, where empowered to Congress by the US Constitution, is the supreme law of the land and generally pre-empts state legislation of the same subject matter. However, the Clean Air Act, at42 U.S.C. 7416, provides the following:

"Except as otherwise provided...nothing in this chapter shall preclude or deny the right of any State or political subdivision thereof to adopt or enforce (1)any standard or limitation respecting emissions of air pollutants or (2) any requirement respecting control or abatement of air pollution..."

This paragraph is known as a what?

Select one:

a.

Savings Clause

b.

Immunity Clause

c.

Privilege Clause

d.

Tenth Amendment Clause