Whoever engages in conduct that would be punishable under section 841(a) ^[1] of this title if committed within the jurisdiction of the United States, or attempts or conspires to do so, knowing or intending to provide, directly or indirectly, anything of pecuniary value to any person or organization that has engaged or engages in terrorist activity (as defined in section 1182(a)(3)(B) of title 8) or terrorism (as defined in section 2656f(d)(2) of title 22), shall be sentenced to a term of imprisonment of not less than twice the minimum punishment under section 841(b)(1), and not more than life, a fine in accordance with the provisions of title 18, or both. Notwithstanding section 3583 of title 18, any sentence imposed under this subsection shall include a term of supervised release of at least 5 years in addition to such term of imprisonment.