Final answer:
The necessary and proper clause, contrary to the statement, is false as it does not limit but rather expands the powers of the national government by allowing Congress to enact laws necessary to exercise its enumerated 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. The necessary and proper clause, also known as the elastic clause, is part of Article I, Section 8 of the U.S. Constitution. This clause grants Congress the power to pass all laws necessary and proper for carrying out the enumerated list of powers. Instead of limiting, it has been used to expand the powers of Congress by allowing it to pass legislation that is not specifically listed in the Constitution, as long as it is related to one of the listed powers.