26 U.S.C. § 6751
(b) Approval of assessment
(2) Exceptions Paragraph (1) shall not apply to—
(Added Pub. L. 105–206, title III, § 3306(a), , 112 Stat. 744.)
Effective Date Pub. L. 105–206, title III, § 3306(c), , 112 Stat. 744, as amended by Pub. L. 106–554, § 1(a)(7) [title III, § 302(b)], , 114 Stat. 2763, 2763A–632, provided that:
“The amendments made by this section [enacting this subchapter] shall apply to notices issued, and penalties assessed, after
June 30, 2001. In the case of any notice of penalty issued after
June 30, 2001, and before
July 1, 2003, the requirements of section 6751(a) of the Internal Revenue Code of 1986 shall be treated as met if such notice contains a telephone number at which the taxpayer can request a copy of the taxpayer’s assessment and payment history with respect to such penalty.”