The Trump Administration is considering a proposal to divert plutonium used for U.S. nuclear weapons to fuel a new generation of power plants. The proposal calls for the Department of Energy to alter the plutonium so it can be used by civilian power companies, including startups pitching advanced reactor designs to fuel data centers. It’s part of a broader push by the Trump Administration to convert tons of the Energy Department’s plutonium to civilian use, a notion that some lawmakers worry could undermine the U.S. weapons program for the benefit of untested private companies.