From The Hill:

Project Guardian, introduced by Attorney General William Barr last month, is a multifaceted plan that will rely on improved information sharing to more effectively enforce current firearms laws and better prosecute the criminals who violate them. Primarily, Project Guardian places increased reporting standards on federal law enforcement to regularly share with state law enforcement the lists of persons rejected from buying a firearm under the National Instant Criminal Background Check System (NICS). More specifically, this memo directs the offices of all U.S Attorneys to more promptly submit to NICS case records of individuals who become legally ineligible to own firearms. This will greatly reduce the lag time between a court’s decision to determine an individual is disqualified from buying or possessing a firearm and the NICS database having knowledge of that determination.