It was reported that Miller and his son, George Miller IV, a lobbyist, were involved in the controversy surrounding the U.S. Department of Energy awarding a $1.2 billion loan to the struggling SunPower Corporation. The loan was awarded hours before the DOE program was set to expire. It was reported that by April 2012, the company's stock had fallen nearly 50% since the loan had been awarded. SunPower has paid Miller's son and his lobbying firm US$138,000 to represent them. Miller asserts that he and his son never discusses legislation; his son, however, does boast of political connections in Washington openly.