If there are material changes in that conference report different from this bill that adversely affect the agreement, I reserve the right to vote against the next cloture vote," he said. "Let me repeat it, I reserve the right to vote against the next cloture vote, if there are material changes to this agreement in the conference report. And I will vote against it if that is the case." Sounds like cold feet. Nelson might not like the heat he's feeling since announcing his deal. http://www.foxnews.com/politics/2009/12/20/senate-democrats-warn-house-alter-health/