The Senate Democratic leadership is not on board with lawmaker plans to begin rewriting ObamaCare and have urged for more time to assess the changes made by Obama and his team, lawmakers say.

Democratic Sens. Mary Landrieu (La.), Jeanne Shaheen (N.H.), Mark Udall (Colo.) and Heidi Heitkamp (N.D.) are discussing a multi-faceted plan to rework parts of the Affordable Care Act (ACA).

Landrieu, Shaheen and Udall face reelection next year.

“The [ObamaCare implementation] upgrade has been significant, but there’s more work to be done,” said Udall.

“Sen. Landieu, Sen. Heitkamp, Sen. Shaheen and I are all working on a package that would incorporate our ideas,” he added.