Final answer:
Article 2 of the UCC provides guidance on filling missing contract terms, and the necessary and proper clause has expanded, not limited, federal powers. The interstate commerce clause has also been used to widen federal regulatory authority.
Step-by-step explanation:
The answer to the UCC Article 2 question is true. Article 2 of the Uniform Commercial Code (UCC) indeed includes rules that outline what terms a court should insert into a contract for the sale of goods when a key term is missing, to facilitate the intent of the contract and the expectations of the parties.
As for the statement regarding the necessary and proper clause, the answer is false. The necessary and proper clause, also known as the elastic clause, gives Congress the ability to pass laws it deems necessary and proper to carry out its powers.
This clause has been historically interpreted as an expansion of federal power, not a limitation.
Concerning the interstate commerce clause, it has seen varying interpretations over time. Initially applied narrowly, the clause has been used to justify broader federal regulatory power over economic activities, significantly increasing the reach of the national government.