A bill that would implement sweeping changes to Section 702 of the Foreign Intelligence Surveillance Act could be dead on arrival in the House as a handful of hard-line Republican members have come out against the legislation, threatening to tank the measure.

The House is set to vote on whether to advance the FISA reform proposal on Wednesday afternoon, a procedural vote that would allow lawmakers to debate its provisions before teeing it up for a vote later this week. However, some hard-right Republicans have said they will vote against the rule, killing the bill before it can even be considered.