Sens. Ted Cruz (R-Texas), Marco Rubio (R-Fla.) and Mike Lee (R-Utah) are vowing to oppose any fast-track bill repealing only parts of ObamaCare, narrowing the path for the legislation to pass the Senate.

The House is set to vote on Friday on a bill under a fast-track process known as reconciliation that would repeal several parts of ObamaCare. The reconciliation process allows a measure to pass the Senate with 51 votes, instead of the usual 60, and get through to President Obama’s desk, where it would face a veto.