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Agence France-Presse:  High stakes for Obama at climate summit

As marathon talks open in Copenhagen on climate change, US President Barack Obama is investing heavily in their success but is walking a tightrope as he weathers criticism both at home and abroad.

But the US Congress has not finished legislation to cut emissions blamed for global warming and his opponents have been emboldened by a scandal over leaked emails that they say raises questions on the science behind climate change.

Republican Congressman Darrell Issa accused the Obama administration of using "flawed science created by a community of bullies to push through ideologically based policies."

"The suggestion that there is a scientific consensus on climate change is itself a myth," he said.

Fox News:  Obama Ignores 'Climate-Gate' in Revising Copenhagen Plans

The scandal has prompted calls for Obama from global warming skeptics to skip this month's climate summit in Copenhagen -- instead, the White House is doubling down on its commitment.  Rep. Darrell Issa, the top Republican on the House Oversight and Government Reform Commmittee, on Friday joined Sen. James Inhofe, R-Okla., in calling on the Obama administration and Congress to investigate the Climate-gate e-mails.

"The very integrity of the report that the Obama administration has predicated much of its climate change policy upon has been called into question and it is unconscionable that this administration and Congress is willing to abdicate responsibility of uncovering the truth to the United Nations,"   the California Republican said in a written statement.  "The administration's Climate-gate denials and refusal to acknowledge the need for a congressional investigation are a sad abdication of their responsibility to ensure that U.S. policies are not driven by corrupted science and data," he said.

Boston Globe:  More hopeful Obama resets on climate meeting

Representative Darrell Issa, the ranking Republican of the House Oversight and Government Reform Committee, also urged the administration to investigate what he called "Climategate" -- allegations that global warming researchers doctored data to show that the planet is warming because of man-made reasons.  “The U.N.’s decision to investigate Climategate is a direct rebuke of the Obama Administration’s refusal to pursue an investigation into the possible manipulation of scientific data to generate predetermined results,” Issa said in a statement.