The main purpose of this legislation is to simplify and standardize the way whiskies are classified and taxed under the Harmonized Tariff Schedule of the United States. By creating a uniform 8-digit subheading number for all types of whiskies, the bill aims to streamline the importation process and ensure consistent duty treatment. Key provisions of the legislation include the removal of existing subheadings related to whiskies and the introduction of a new subheading, 2208.30.00, which will apply to all whiskies.