A bill to provide for the reporting to State and local law enforcement authorities of cases in which the national instant criminal background check system indicates that a firearm has been sought to be acquired by a prohibited person, so that authorities may pursue criminal charges under State law, and to ensure that the Department of Justice reports to Congress on prosecutions secured against prohibited persons who attempt to acquire a firearm.

NICS Denial Notification Act of 2018 This bill amends the federal criminal code to require the Department of Justice (DOJ) to report certain information to state and local law enforcement authorities following a determination, by the National Instant Criminal Background Check System, that a prospective firearm purchaser is a prohibited person (i.e., a person who is barred from receiving or possessing a firearm). DOJ must report annually on: (1) certain details regarding denied firearm purchases in each category of prohibited persons, and (2) the number of background check notices reported to states.