DAVID GREENE, HOST: … wealthy donors like Tom Steyer are putting a pistol to someone's head, forcing their pet issues on candidates. Steyer himself sees things very differently. He quit his hedge fund with $1.5 billion and now in his view he's fighting as hard as he can with money and passion to do something very noble - save the planet. .. With plans to pour $100 million into key elections this year, Steyer joins this elite group of wealthy individuals trying to influence politicians and voters. Steyer says he doesn't agree with the growing influence of money in politics...