IF they are doing this as part of the investigation of the leak then that is fine. If they are doing it just because they want to find out who they are calling then I would have a problem with that.

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All you need to know about the energy crisis:
ANWR Exploration Republicans: 91% Supported. Democrats: 86% Opposed.
Coal-to-liquid R's: 90% YES. D's: 78% NO.
Oil Shale Exploration R's: 90% YES. D's: 86% NO.
Outer Continental Shelf Exploration R's: 81% YES. D's: 83% NO.
Increased Refinery Capacity R's: 97% YES. D's: 96% NO

SUMMARY: 91% of House Republicans have historically voted to increase the production of America’s own oil and gas. 86% of House Democrats have historically voted against.