The main purpose of this legislation is to allow the United States Postal Service to continue issuing a special postage stamp, known as a semipostal, to raise funds specifically for breast cancer research. This initiative aims to support ongoing efforts in the fight against breast cancer by providing a new source of funding. Key provisions of the legislation include extending the authority for the Postal Service to issue this semipostal stamp until the year 2037. This extension allows the program to continue for an additional ten years beyond its previous expiration date of 2027.