This bill, known as the Curbing Offenses on Policing Services Act , amends Section 111 of title 18, United States Code, to increase penalties for assaulting, resisting, or impeding certain federal officers and employees. It specifically criminalizes the use of explosive materials in such offenses, defining them by reference to section 841. The legislation raises the maximum imprisonment for general assaults from one year to two years, and from eight years to ten years for more serious assaults. When explosive materials are involved, the maximum fine increases to $500,000 . Additionally, the maximum imprisonment term for these aggravated offenses is extended from 20 years to 25 years .