The Contracts Clause and the Dormant Commerce Clause (i.e., the negative implications of the Commerce Clause).

A Commerce Clause definition can be found at Wikipedia or at a legal dictionary. A Commerce Clause gives Congress the right to regulate commerce between states.

When there is no existing federal law, the Dormant Commerce Clause ... of its own citizens at the expense of out-of-state citizens is not a legitimate state objective. ... it will be upheld unless the burden imposed on such commerce is clearly.

Yes the federal government can regulate commerce under the Commerce clause. The Commerce Clause is found in Article I, Section 8 of the US Constitution.

Yes, the term "Commerce Clause" should be capitalized in a sentence as it refers to a specific clause in the United States Constitution.