26 U.S. Code § 7441 - Status
There is hereby established, under article I of the Constitution of the United States, a court of record to be known as the United States Tax Court. The members of the Tax Court shall be the chief judge and the judges of the Tax Court.
1969—Pub. L. 91–172 substituted provisions establishing Tax Court as a Constitutional court, and enumerating the members that comprise its bench, for provisions continuing the Board of Tax Appeals, known as the Tax Court, as an independent agency in the Executive Branch of Government and enumerating the members that comprise its bench.