The purpose of this legislation, known as the "Closing the De Minimis Loophole Act," is to eliminate a specific provision in the Tariff Act of 1930 that allows for the duty-free importation of low-value goods, known as de minimis treatment. This change aims to enhance the collection of tariffs and taxes on imported goods, ensuring that all imports contribute fairly to the economy. Key provisions of the legislation include the removal of the de minimis threshold that previously allowed certain low-value items to enter the U.S. without incurring tariffs.