Bill Clinton did not champion the Kyoto treaty.
I can’t recall if he simply mumbled a few insincere words that sounded good, and moved it to the “for the next guy” pile on his desk, or if he actually signed it along with the pardons and the new “arsenic in water” norms – little potholes meant for the next guy, as well. Oh, and the US Senate did not “champion” Kyoto, either. They voted against it, 95-0, if I recall.
But why would a modern-day journalist let a little thing like that get in the way when Clinton is on his “History Revision and Don’t You Just Love Me Tour.”