States could loosen their rules, and an amendment is the only way to prevent it. Douglas R. Clifford/Tampa Bay Times/ZUMA Press The SAVE America Act is tying the U.S. Senate in knots. Democrats will filibuster, and Republicans have no hope of getting the 60 votes necessary to overcome it. President Trump urges scrapping the filibuster to pass it, but that might not garner even a simple majority and would be a controversial precedent dividing his party. But the battle is over tactics, not principle.