1994—Pub. L. 103–354 substituted “Secretary” for “Administrator”.

1975—Pub. L. 94–124 substituted “of which the holder had actual knowledge at the time it became a holder” for “of which the holder has actual knowledge”.

Section effective May 11, 1973, see section 12 of Pub. L. 93–32, set out as a note under section 930 of this title.