Final answer:
The necessary and proper clause, contrary to limiting, has expanded the powers of the national government by allowing Congress to pass laws necessary and proper for executing its constitutional powers.
Step-by-step explanation:
The statement that the necessary and proper clause has had the effect of limiting the power of the national government is false. In fact, the necessary and proper clause, often referred to as the elastic clause, has historically been used to expand the powers of the federal government beyond those explicitly enumerated in the Constitution. It allows Congress to pass laws deemed necessary and proper for carrying out its duties. Over time, the application of this clause has been pivotal in allowing the federal government to adapt to changes and address issues not foreseen by the Founding Fathers, thus increasing its authority.