Clearly “climate change” has already caused the dumbing down of Barack Obama.
Oops, my bad.
Au contraire, the proximate cause of the dumbing down of Barack Obama is clearly his exposure to many years of progressive idiocy. It has reduced him to spouting mindless inanities and designed lies as if they were profound truths.
So never mind...
You would think he would be greatful since global warming has allowed him to spend more sunny days playing golf.