You don't have to wait for the government to pass laws to make a difference. Most states in the US offer "Green Power". Take a few minutes to see if it is available in your area and sign up for it.
http://www.epa.gov/greenpower/locator/index.htm
My family and I purchase 100% of our power generated from wind turbines. By purchasing electricity generated by renewable sources, it forces your power company to buy more and place it on the grid.