The insured under United States Government life insurance shall have the right at any time and from time to time and without the consent or knowledge of the beneficiary to change the beneficiary. A change of beneficiary must be made by written notice to the Department of Veterans Affairs over the signature of the insured and shall not be binding on the United States unless received by the Department of Veterans Affairs. A change of beneficiary must be forwarded to the Department of Veterans Affairs by the insured or his or her agent and must contain sufficient information to identify the insured. Whenever practicable, such notices shall be given on forms prescribed by the Department of Veterans Affairs. Upon receipt by the Department of Veterans Affairs, a change of beneficiary shall be deemed effective as of the date the insured signed the written notice. The United States shall be protected in all payments made to the beneficiary last of record and before receipt of notice of a change of beneficiary, and no payments so made shall be paid again to the changed beneficiary. The insured may exercise any right or privilege given under the provisions of a United States Government life insurance policy without the consent of the beneficiary. An original designation of a beneficiary may be made by the last will and testament, but no change of beneficiary may be made by the last will and testament. The provisions of the “beneficiary” clause in United States Government life insurance policies are hereby amended accordingly.