Sen. Mike Rounds said he wants to ensure that money in a bill intended to stabilize Obamacare doesn’t go toward abortions, a major concern of anti-abortion groups.

Anti-abortion groups say the bill, sponsored by Sens. Lamar Alexander, R-Tenn., and Patty Murray, D-Wash., does not include federal protections to ensure that Obamacare insurer payments aren’t used to fund abortion services. Some House Republicans, already skeptical of supporting legislation to help Obamacare, cited the issue as reason for opposing the legislation.