Protect America’s Wildlife and Fish In Need of Conservation Act of 2019 or the PAW and FIN Conservation Act of 2019 This bill nullifies the 2019 rules relating to the listing of endangered or threatened species and the designation of critical habitats. Among other things, the restored rules automatically give threatened species the same protections as endangered species; revise requirements governing when an agency must consult with the U.S. Fish and Wildlife Service or the National Marine Fisheries Service about endangered species, threatened species, or their habitats; prohibit economic assessments from being considered in listing decisions; and revise the criteria used for designating critical habitats for the species.