That is not correct. The Clean Air and Clean Water acts don't really show up as important events if you chart out the levels of pollution in America. The levels

That is not correct. The Clean Air and Clean Water acts don't really show up as important events if you chart out the levels of pollution in America. The levels had been decreasing before the acts, largely because of state-level regulation and self-regulation. Of course, it's not that these acts didn't do anything. They were discrete pieces in the larger edifice that led to the environmental improvements. But it's certainly incorrect to claim that these acts were THE reasons for the cleanup, and thus it's also incorrect to expect that rolling back those acts would return pollution to the previous levels.