Final answer:
The statement about bargaining unit work is generally false as emergency situations prioritize safety over regular work assignments. Additionally, the necessary and proper clause does not limit but rather expands the power of the national government.
Step-by-step explanation:
The statement that bargaining unit work must be performed only by bargaining unit employees in an emergency situation such as tornado, fire, or power failure is generally false. In emergency situations, the priority is ensuring safety and addressing the emergency effectively, which may necessitate the use of any available personnel, not just those in the bargaining unit. The specific rules can vary based on the collective bargaining agreement in place, but safety and emergency response take precedence over normal work assignments.
Regarding the necessary and proper clause, the statement that it has had the effect of limiting the power of the national government is false. The necessary and proper clause, often referred to as the elastic clause, actually allows Congress to enact laws that are necessary and proper for carrying out its enumerated powers. This clause has been interpreted broadly over time, giving the federal government more leeway to act in a variety of circumstances and thus expanding, not limiting, its powers.