Senate Republicans hold a majority but have shown consistent reluctance to eliminate the legislative filibuster through the nuclear option, a rules change requiring only a simple majority vote to override the 60-vote threshold for advancing bills. President Trump has repeatedly urged the move during the 2025 government shutdown and again in March 2026 to advance the Save America Act and voter identification measures, yet Senate Majority Leader John Thune and most colleagues have rejected the idea to preserve institutional norms and minority protections. Isolated calls from figures like Sen. Ron Johnson in April 2026 tied to DHS funding amid security concerns have not shifted broader party sentiment. This history of internal opposition shapes trader views that the procedural barrier remains intact absent a major catalyst in the current session.