I was wondering about that myself, Snail. Let's see: "We should do everything that is economically feasible to reduce energy use and pollution, regardless of the issue of global warming." Could one change the wording somewhat and still have the same message?

"Aside from the issue of global warming..."
"Notwithstanding the issue of global warming..."
"Regardless of the issue of global warming..."

"Regardless of global warming..." Nope. Didn't say that.

Like you said, I think he is saying "Never mind the issue of global warming..."