Whether a conviction resulting in a fifteen-year mandatory minimum sentence under 18 U.S.C. § 1591 requires, as the statute says, that force 'was used' make someone to have non-consensual sex against her will?

QUESTION PRESENTED FOR REVIEW Whether a conviction resulting in a fifteen-year mandatory minimum sentence under 18 U.S.C. § 1591 requires, as the statute says, that force “was used” make someone to have nonconsensual sex against her will? Whether § 1591’s requirement that the offense be committed ““knowingly-in or affecting interstate or foreign commerce” means that the defendant must know that that his acts had at least a de minimus effect on interstate commerce as well as having a knowing link between the crime’s actus reus and its effect on interstate commerce? --prefix-