This bill amends U.S. tariff rules to create special trade classifications for breast cancer survivor medical products. It establishes a new tariff category for silicone prosthetic breast forms designed for use with mastectomy brassieres and another category specifically for mastectomy bras themselves. Both changes take effect on January 1, 2027. The tariffs on these items would be set at zero percent for most countries, though some trading partners would receive duty-free status under existing trade agreements, while other countries would face a 25 percent tariff on prosthetics and a 90 percent tariff on the bras. The bill affects breast cancer survivors who use these medical devices and products, as well as manufacturers and importers of these specialized items.