What do you call what Obama tried to do then?
I need to brush up on his track record to form a decent response to this, because I know my opinion here is unpopular and I need to be better able to back it up...
I know he's credited with a lot of stuff. But from what I recall, it's all small steps. Nothing sufficient. Nothing that rises to the occasion. And he never acted as a leader (a Compass) in any attempt to impassion our national culture or our government to take sufficient action, which is what we need more than anything. The one counter-point I'd expect to be brought up to that is the Paris Agreement. But even that only settled on attempting to limit warming to an amount that scientists warn will be excruciatingly painful for the world, and only maybe just enough to prevent collapse of civilization. And as important as climate change is, I resent the exclusive focus on it. Because there are other environmental issues that are just as severe. So even if he showed some leadership on climate change, that wouldn't mean showing leadership on addressing the collapse of the environment as a whole issue.
The things that stand out to me most in my memory when I think of Obama in relation to the environment...
His inaction on the pipelines. I've pointed out before the situation with the Standing Rock, where state police forces were conscripted as corporate private military to enforce an invasion on native american sovereign land in violation of international treaty. This is a big fucking deal in regards to more than just the environment. And I watched an Obama speech where someone from the crowd asked him to make a statement on it. His response could be summed up as "umm... well... yeah... I like Native Americans". And just before the end of his 2nd term, he finally decides to weakly put a halt on the development that is immediately undone as soon as he's out of office.
And then there's the mostly now forgotten TransCanada Pipeline, which was also hotly contested as it was in progress throughout the majority of Obama's time as president. Which as far as I'm aware, he completely ignored. (Edit for Correction: I was thinking of Keystone XL, which is owned by TransCanada)
These were flagship struggles in environmentalist circles. He may have done things regarding the environment, but in my opinion, ignoring flagship struggles on an issue flies in the face of being considered leadership on an issue.
And I'm super salty about his response to Deepwater Horizon. He shut down offshore drilling for a while. And then a while later (after the event had sunk beneath the surface of political consciousness?), opened up more waters to offshore drilling than were available before the disaster.