(a) In general
Subject to section 14402(b) of this title (relating to construction and treatment of certain services) and subsection (b) of this section, no funds appropriated by the Congress shall be used to provide, procure, furnish, or fund any item, good, benefit, activity, or service, furnished or performed for the purpose of causing, or assisting in causing, the suicide, euthanasia, or mercy killing of any individual.

(b) Nonduplication
Subsection (a) shall not apply to funds to which section 14402, 14403, or 14404 of this title applies, except that subsection (a), rather than section 14402 of this title, shall apply to funds appropriated to carry out title 10 (other than chapter 55), title 18 (other than section 4005(a)), and chapter 37 of title 28.