18 U.S.C. § 3615
Criminal default
Whoever, having been sentenced to pay a fine, willfully fails to pay the fine, shall be fined not more than twice the amount of the unpaid balance of the fine or $10,000, whichever is greater, imprisoned not more than one year, or both.
(Added Pub. L. 98–473, title II, § 212(a)(2) , Oct. 12, 1984 , 98 Stat. 2006 .)