2003—Subsec. (a)(1). Pub. L. 108–170, § 302(e)(1), substituted “health” for “medical” in three places in concluding provisions.

Subsec. (a)(2). Pub. L. 108–170, § 302(e)(2), substituted “health” for “medical” the first place it appeared and inserted “chiropractor,” after “podiatrist,”.

Pub. L. 108–170, title III, § 302(h), Dec. 6, 2003, 117 Stat. 2058, provided that: “The amendments made by this section [amending this section and sections 7401 to 7404, 7409, and 7421 of this title] shall take effect at the end of the 180–day period beginning on the date of the enactment of this Act [Dec. 6, 2003].”