Reduce Russian Uranium Imports Act

This bill bans imports of unirradiated low-enriched uranium (nuclear fuel) from Russia or Russian-owned companies into the U.S., effective 90 days after enactment. It sets annual import limits (e.g., 578,877 kg in 2023, decreasing to 459,083 kg by 2027) and allows limited waivers by the Energy Secretary for national security or if no alternative fuel source exists, but waivers expire by 2028. Exemptions include Department of Energy national security contracts and non-uranium isotopes. The ban ends completely on December 31, 2040.