Answer: Improvement to the environment brought about through the politicians' public support of environmental regulations more than offset the damages done to the environment by the politicians' private plane.
Step-by-step explanation:
The above answer accept the fact that the politicians' affect the environment negatively by their planes but this has been erased by their more positive contribution to the economy through environmental regulations.
The fact that politicians' hide the facts that they travel by private plane in their speeches or that the people are not convinced of their speeches as regards the environment or the majority of people believe that they make society problem worse non of these debunks the claim that the politicians' do not believe what they say but are only making the environment worse by flying in private plane that pollutes the environment.