Washington (CNN) -- The White House counsel refused Friday to comply with a subpoena as issued by a House panel regarding the failed solar energy company Solyndra, saying that the initiative "was driven more by partisan politics than a legitimate effort to conduct a responsible investigation." Kathryn Ruemmler expressed her views in a letter to Reps. Fred Upton and Cliff Stearns, members of the House Energy and Commerce Committee. A day earlier, one of its subcommittees requested internal documents regarding the government's decision to issue more than half a billion dollars in federal loan guarantees in 2010 to Solyndra, which later filed for bankruptcy.
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NEW: House Democrats says the probe is fair, but the GOP-led subpoena is not
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White House counsel says the subpoena, as written, is unacceptable
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She says the White House is "willing to work" with legislators and provide info
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House subcommittee's chairman says Obama administration hasn't cooperated
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Defending the Obama administration, the counsel said, "None of the more than 85,000 pages of documents produced to date evidence any favoritism to political supporters or wrongdoing by the @placeholder."