Final answer:
Under Article 2 of the UCC, promises to keep an offer open, known as firm offers, will be enforced without consideration if they meet specific requirements. The necessary and proper clause has expanded rather than limited the powers of the national government, while the Constitutional Convention of 1787 led to the drafting of a new constitution, not just revising the Articles of Confederation.
Step-by-step explanation:
Under Article 2 of the UCC, some promises to hold an offer open, known as firm offers, will indeed be enforced without the need for consideration as long as certain conditions are met. This is true when the offer is made by a merchant in writing and signed, ensuring that the offer remains open for the time stated, or if no time is stated, for a reasonable time not to exceed three months.
It is important to clarify that the necessary and proper clause, found in Article I, Section 8 of the U.S. Constitution, has not had the effect of limiting the power of the national government. Rather, this clause, sometimes referred to as the elastic clause, has allowed Congress to exercise powers not explicitly listed in the Constitution, as long as those powers are in pursuit of executing Congress's enumerated powers.
The Constitutional Convention in 1787 had a more profound purpose than merely revising the Articles of Confederation. It sought, and ultimately achieved, the drafting of an entirely new constitution, which created the framework for the current United States federal government—a strong indication of the convention's significant impact on the formation of American governance.