Congressional Republicans are itching to dismantle Obamacare, but a group of conservatives say the current plan to take down key parts of the law is not quick enough, and is already pushing for alternatives that completely and immediately repeal it entirely.

Republicans in the House and Senate have pointed to a repeal bill that was approved last year through a procedural move called reconciliation as a means to quickly gut the law after Trump assumes office in January. Reconciliation bills require only a simple 51-vote majority as opposed to 60 votes to break a filibuster, which means they’re a way to quickly pass a proposal in the Senate.