"I'm working on an amendment to bring Stupak language to the bill," Nelson said today, referencing an amendment added to the House health care bill by Reps. Bart Stupak (D-Mich.) and Joe Pitts (R-Penn.).
The amendment restricts health insurance coverage for abortion and has raised the ire of abortion rights groups. A coalition of those groups are launching a "day of action" on Wednesday to lobby against the amendment.
Nelson has said he may join a Republican filibuster against the health care bill unless it is changed to his liking, something that would include adding the Stupak language. Even though the Stupak amendment made it through the House, some Democratic House members are now saying they have enough votes to block any bill that comes back to the House with the language intact.
CBSNews.com Special Report: Health Care