Keys vs. Carolina Coach, attempting to justify segregation on a separate but equal basis for six years before being forced by the Department of Justice under then Attorney General Robert F. Kennedy to act in response to the Freedom Riders protests of 1961. Nuclear Regulatory Commission According to Frank N. von Hippel, despite the 1979 Three Mile Island accident in Pennsylvania, the Nuclear Regulatory Commission (NRC) has often been too timid in ensuring that America's 104 commercial reactors are operated safely: Nuclear power is a textbook example of the problem of "regulatory capture" – in which an industry gains control of an agency meant to regulate it. Regulatory capture can be countered only by vigorous public scrutiny and Congressional oversight, but in the 32 years since Three Mile Island, interest in nuclear regulation has declined precipitously. Then-candidate Barack Obama said in 2007 that the five-member NRC had become "captive of the industries that it regulates" and Joe Biden indicated he had absolutely no confidence in the agency. The NRC has given a license to "every single reactor requesting one", according to Greenpeace USA nuclear policy analyst Jim Riccio to refer to the agency approval process as a "rubber stamp". In Vermont, ten days after the 2011 Tōhoku earthquake and tsunami that damaged Japan's Daiichi plant in Fukushima, the NRC approved a 20-year extension for the license of Vermont Yankee Nuclear Power Plant, although the Vermont state legislature had voted overwhelmingly to deny such an extension. The Vermont plant uses the same GE Mark 1 reactor design as the Fukushima Daiichi plant. The plant had been found to be leaking radioactive materials through a network of underground pipes, which Entergy, the company running the plant, had denied under oath even existed. Representative Tony Klein, who chaired the Vermont House Natural Resources and Energy Committee, said that when he asked the NRC about the pipes at a hearing in 2009, the NRC didn't know about their existence, much less that they were leaking. On March 17, 2011, the Union of Concerned Scientists (UCS) released a study critical of the NRC's 2010 performance as a regulator. The UCS said that through the years, it had found the NRC's enforcement of safety rules has not been "timely, consistent, or effective" and it cited 14 "near-misses" at U.S. plants in 2010 alone. Tyson Slocum, an energy expert at Public Citizen said the nuclear industry has