Senate Republicans have written the Congressional Budget Office requesting a copy of the CBO’s analysis of a proposed Democratic compromise to the public insurance option.

Republican Sens. Mike Enzi (Wyo.), Chuck Grassley (Iowa) and Judd Gregg (N.H.) on Monday sent a letter to the CBO requesting the information. Senate Majority Leader Harry Reid (D-Nev.) has kept the potential compromise under wraps as Democratic leaders seek to assemble a 60-vote coalition behind a bill, although certain aspects of the plan have been revealed. “We have not been included in discussions as the Majority Leader’s perfecting amendment has been developed behind closed doors, and instead have been forced to rely on media reports and rumor, so we can only guess at its impact on the economy and the American taxpayer,— Enzi, Grassley and Gregg said in a joint statement. “Therefore, we felt it important to request a full and detailed estimate of the Reid amendment so we could fully understand the true costs and new taxes it contains.—

Reid has been waiting for the CBO to complete its cost estimate of the potential compromise, with that information expected to become available this week. According to the rules governing the release of CBO analyses, any Senator who requests such information is entitled to it once the legislative proposal in question is made public.