This bill significantly amends section 111 of title 18, United States Code, to impose stringent mandatory minimum penalties for individuals who assault federal officers and employees. Specifically, it mandates a minimum imprisonment of 20 years for any assault that causes bodily harm or bodily injury to a federal officer or employee. The legislation clarifies that these provisions apply exclusively to acts of assault, resistance, or impediment against officers or employees of the United States while they are engaged in or on account of their official federal duties. Furthermore, it explicitly states that these federal provisions will supersede any and all State laws that relate to such assaults. The Act will apply to offenses committed on or after its date of enactment.