Nuclear Waste Policy Amendments Act of 2019 This bill addresses the storage and disposal of nuclear waste. Among other things, the bill directs the Department of Energy (DOE) to initiate a program to consolidate and temporarily store commercial spent nuclear fuel during the development, construction, and operation of a permanent nuclear waste repository; addresses federal land withdrawal and related management issues, including the permanent withdrawal of specific federal land for repository use by DOE; updates the Nuclear Regulatory Commission licensing process and conditions for the permanent repository; limits activities relating to developing a separate defense waste repository used for storing high-level radioactive waste and spent nuclear fuel derived from the atomic energy defense activities of DOE; authorizes DOE to enter into agreements to provide benefits to state, local, and tribal governments that might host or be affected by facilities related to storing nuclear waste; revises the method by which DOE funds its nuclear waste management activities though the collection and usage of the Nuclear Waste Fund; creates an Office of Spent Nuclear Fuel within DOE; and requires DOE to establish a Stranded Nuclear Waste Task Force to study existing resources and funding for communities that contain stranded nuclear waste and develop economic adjustment plans for such communities.