1976—
Pub. L. 94–455 struck out “or his delegate” after “Secretary” wherever appearing.
1958—Subsec. (a)(1), (4).
Pub. L. 85–866 inserted “certified mail or” before “registered mail” wherever appearing.
Amendment by
Pub. L. 96–589 effective Oct. 1, 1979, but not applicable to proceedings under Title 11, Bankruptcy, commenced before Oct. 1, 1979, see section 7(e) of
Pub. L. 96–589, set out as a note under section
108 of this title.
Amendment by
Pub. L. 89–719 applicable after Nov. 2, 1966, regardless of when title or lien of United States arose or when lien or interest of another person was acquired, with certain exceptions, see section
114
(a)–(c) of
Pub. L. 89–719, set out as a note under section
6323 of this title.
Amendment by
Pub. L. 85–866 applicable only if mailing occurs after Sept. 2, 1958, see section 89(d) of
Pub. L. 85–866, set out as a note under section
7502 of this title.