The purpose of this legislation, known as the Tax Court Improvement Act, is to enhance the services provided to taxpayers by the Internal Revenue Service (IRS) through improved judicial review processes. The act aims to make the Tax Court more efficient and accessible for individuals and businesses dealing with tax disputes. Key provisions of the act include several important changes. First, it allows judges and special trial judges in the Tax Court to issue subpoenas, which means they can require witnesses to attend hearings and produce relevant documents.