Republican Senate leaders have repeatedly rejected full elimination of the 60-vote filibuster threshold despite President Trump's multiple calls for the nuclear option during the 2025 government shutdown and subsequent disputes over DHS funding. Majority Leader John Thune and most GOP senators have instead relied on targeted precedents for specific measures such as nominations and budget baselines, citing risks that Democrats could later exploit a bare-majority rule. Fresh pressure emerged in April 2026 when Sen. Ron Johnson urged rule changes amid stalled legislation and heightened national-security concerns, though leadership has signaled no appetite for broad reform before the midterms. Key upcoming catalysts include votes on appropriations, election-related bills, and any renewed shutdown threats that could test internal party discipline on procedural changes.