Senate Democrats Block $1.15 Trillion Defense Bill Over Iran Policy

The chamber split 50-46 along largely partisan lines, falling short of the 60-vote threshold required to advance the legislation. In a tactical maneuver, Republican leader John Thune cast a vote against his own side’s bill, a procedural safeguard that preserves the opportunity to bring the measure back to the floor for reconsideration.

Opposition from Democrats centers on the scope of the current defense budget and the administration’s history of launching military engagements without congressional authorization. While the defense policy bill typically enjoys smooth passage, this year’s iteration has become a lightning rod for broader debates regarding the balance of power between the White House and the legislative branch.