Final answer:
The Entire Contract Clause is not mandatory under the uniform NAIC law.
Step-by-step explanation:
The NAIC (National Association of Insurance Commissioners) law includes several provisions that are mandatory for insurance policies. However, the one provision that is not mandatory under the uniform NAIC law is the Entire Contract Clause. This clause states that the insurance policy, along with any attached endorsements, constitutes the entire contract between the insured and the insurer.