I recall politicians touting "clean coal" for a year or two, then finally admitting, OK, there's really no such thing as clean coal.
I live within a days drive of the Hanford reactor, which has had many leaks in the storage drums there for years. And the plant was shut down long ago. I know nothing about the helium 3 version of nuclear power. Is it actually clean? I wonder. I do know that I don't trust a word from power industry lobbyists in governmental positions or their paid congressmen anymore.