Argument: 15%-by-2021 RES is insufficient to liberals
Paul Tullis. "Why the Senate's Renewable Electricity Standard Stinks." Change.org. September 27, 2010: "The second reason to kill the bill is that it’s actually worse than nothing. As has been noted here previously, the U.S. already averages about 12 percent renewables; getting to 15 in the next 11 years is a foregone conclusion. The low standard could actually slow the development of clean energy."