Senate defense reconciliation bill clears vote-a-rama on June 30 with Vance tiebreaker, sending $152 billion in military spending to Trump
A marathon Senate amendment process began at 9 a.m. EDT June 30 on a defense-focused reconciliation package covering Space Force, nuclear modernization, Air Force procurement, and military families; three Republicans joined Democrats in opposition, requiring Vice President Vance to cast the deciding vote
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The Senate-passed defense reconciliation package, which cleared on a Vance tiebreaker in the early hours of July 1, now goes to the House, which previously passed a different version. Conference negotiations are expected to focus on the Space Force and X-37B provisions, where House appropriators sought lower funding levels. Senate Armed Services Chairman Roger Wicker called the bill 'a down payment on a generational upgrade for our nation's defense capabilities.' ↗
Summary
The US Senate began a marathon vote-a-rama at 9 a.m. EDT on June 30 on a defense-focused reconciliation package allocating roughly $152 billion in FY2026 military spending, including nearly $14 billion for Space Force research and development, $1 billion for the X-37B autonomous spaceplane, $3.7 billion for military satellite systems, and funding for Air Force long-range strike aircraft and nuclear missile modernization. Three Republicans, Thom Tillis (NC), Rand Paul (KY), and Susan Collins (ME), voted with Democrats against the bill, making the vote a tie and requiring Vice President Vance to cast the deciding vote. Senate leadership secured the margin only after making specific spending concessions to Alaska Republican Lisa Murkowski.
The split
Republican defense hawks framed the package as necessary catch-up spending after years of what they described as underinvestment in nuclear deterrence, space control, and long-range strike capabilities. Rand Paul opposed the bill on deficit grounds, arguing that reconciliation-funded defense spending bypasses normal budget discipline. Collins cited unrelated domestic-spending provisions. Democrats attacked the overall reconciliation strategy as using a procedural mechanism to fund military programs that should go through regular appropriations, where they retain more leverage, and opposed the continuation of an anti-weaponization fund they had sought to terminate.
By the numbers
- $152 billion, total FY2026 defense reconciliation package
- $14 billion, Space Force research and development allocation
- $1 billion, X-37B spaceplane program
- $3.7 billion, military satellite development
- 3, Republican senators who voted against (Tillis, Paul, Collins)
- 1, tiebreaking vote cast by Vice President Vance
Why it matters
Using reconciliation to fund defense programs at this scale represents a structural shift in how the US finances military modernization, removing much of it from the annual appropriations debate where Democrats have historically extracted spending concessions. The VP tiebreaker signals the Republican majority's inability to hold its full caucus even on a defense bill, which may constrain future reconciliation ambitions. The X-37B and satellite provisions lock in a Space Force investment trajectory that carries implications for US-China and US-Russia space competition.
What to watch
- Whether the House accepts the Senate version or demands a conference to reconcile differences
- Rand Paul's stated intention to challenge future reconciliation defense spending on constitutional grounds
- How the satellite and X-37B programs advance in execution against the new funding levels
- Whether the vice-president tiebreaker pattern repeats on upcoming legislation