(a) Statutory basis. This section and
sections 54.9801-2 through 54.9801-6, 54.9802-1, 54.9802-2, 54.9802-3T, 54.9811-1, 54.9812-1T, 54.9831-1, and 54.9833-1 (portability sections) implement Chapter 100 of Subtitle K of the Internal Revenue Code of 1986.