But it isn't the role of the representatives to come to terms with science, it's their role to come to terms with the will of "The People" (the tangled mess of what that means). I think it could be argued that the will of "The People" isn't to enact strong action to fight climate change. It's more to retain jobs in old energy industries and procrastinate until something absolutely dramatic and visceral impacts their day-to-day.
I'd suppose the Achille's heel of "The People" is their short-sight. You need big minds with big wallets to see and act on the long game.