[Nader]'s efforts resulted in the creation of some pillars of the regulatory state: the Occupational Safety and Health Act, the Freedom of Information Act, and the Consumer Product Safety Act, among others.
He got his start with auto safety, which has probably saved millions of lives by now, but he proceeded from there to pretty much tireless work on progressive issues in Washington for his entire life. He was successful enough to fall into the groundbreaking musician's trap, of "I don't see what difference he made" because the things he created were so seismic that now they seem like part of the landscape.