This bill increases federal penalties for crimes committed against law enforcement officers. It creates a minimum 20-year prison sentence for anyone who assaults a federal law enforcement officer or a state or local officer (if interstate commerce or interstate-traveled weapons are involved) resulting in serious injury. The bill also ensures that anyone who murders a federal or state or local law enforcement officer faces prosecution as first-degree murder under federal law, with the same penalties applicable when interstate commerce or interstate-traveled weapons are involved. The legislation affects federal prosecutors and law enforcement agencies nationwide who will enforce these enhanced penalties. Within three years of the law's enactment, the Attorney General must report to Congress on how many prosecutions have resulted from these new provisions.