美国一家上诉法院周二裁定，禁止重罪犯持有枪支的联邦法律，只有在当事人此前的定罪涉及暴力或暗示存在滥用枪支风险威胁的情况下，才能合宪地适用。
A US appeals court concluded on Tuesday that a federal law barring felons from owning guns can only be constitutionally applied when a person's prior conviction involved violence or threats suggesting a risk of firearms misuse.