Why did Jimmy Carter ban the reprocessing of nuclear waste?

Jimmy Carter banned the reprocessing of nuclear waste in 1977 primarily due to concerns over nuclear proliferation and the potential for weapons development. He believed that reprocessing could lead to the diversion of plutonium for use in nuclear weapons, posing a significant security risk. Additionally, Carter aimed to promote safer waste management practices and emphasized the importance of environmental protection. His administration sought to encourage the development of more secure and sustainable energy alternatives.