Defense Secretary Pete Hegseth is pushing a record $1.5 trillion Pentagon budget, but Senate Republicans are leaving town without moving closer to enacting what he calls the crown jewel of his agenda, as GOP lawmakers increasingly balk at the proposal’s reliance on controversial budget maneuvers.
Hegseth has spent recent weeks trekking to Capitol Hill to lobby for the defense plan, arguing it is essential to meet global military challenges. “Not funding this department at 1.5 trillion, I believe, is the greatest threat that our nation faces,” he warned senators in a hearing last month. But his pitch has failed to overcome skepticism among Republicans, who worry about the political cost of advancing the package before the midterm elections and question whether the administration has explained why they should invest valuable political capital in Trump’s vision.
The $1.5 trillion request represents a historic increase for the military. According to Politico’s reporting on August 10, the defense budget would be the largest in modern history and would stamp Trump’s mark across military priorities, from new battleships to a Golden Dome missile defense shield. The House passed a $1.15 trillion defense policy bill on July 22, but the Senate has stalled on advancing the full $1.5 trillion package.
The administration’s strategy relies on a two-track approach that has exposed deep Republican divisions. The plan would use the budget reconciliation process—which allows the majority to bypass Democrats—to provide $350 billion in additional spending on top of the base defense budget. Reconciliation is a powerful tool that requires only a simple majority, but it can only be used a limited number of times, and Republicans have already used it twice in the past two years for other Trump priorities.
Top Senate Republicans have cast serious doubt on whether a third reconciliation bill is feasible. In June 2026, Senate Appropriations Chair Susan Collins and Senate Defense Appropriations Subcommittee Chair Mitch McConnell—both of whom opposed Hegseth’s nomination—said it is “safe to conclude” there will not be another reconciliation bill. “Really not an option,” McConnell told reporters. This skepticism from GOP appropriators has become a major obstacle to the defense secretary’s plans.
Senator Lisa Murkowski of Alaska, a defense-minded Republican, highlighted the uncertainty in recent weeks. “So much of that additional defense funding is banking on not only a third, but potentially a fourth reconciliation,” she said, according to Politico. “So what if that doesn’t come? I’ve asked Pentagon officials: you have your F-35s, your Patriot missiles baked into that—what’s your plan B? And it’s been tough to get an answer.” Her question underscores a core Republican concern: the Pentagon has not provided a credible backup plan if reconciliation fails.
Senator Mike Rounds of South Dakota, another defense hawk, acknowledged the uphill battle. “We’ve got more work to do to get it done,” he said. The situation reflects a broader tension within the Republican majority. While many GOP lawmakers support increased defense spending in principle, they worry about the political risks of voting for a massive budget increase ahead of closely contested midterm elections. Additionally, some defense hawks argue the approach gives too much spending power to the White House, rather than preserving congressional authority over military priorities.
The Pentagon’s recent dismissive approach to Congress has compounded the problem. Both Republican and Democratic lawmakers say they lack critical information on military operations and spending decisions, and have been left in the dark on major strategic shifts, including efforts to scale back U.S. military commitments in Europe. Senate and House Republicans have placed limits on such troop reductions in their defense bills, signaling frustration with the Pentagon’s communication.
Despite the budget struggle, Hegseth retains Trump’s backing. After reports that the president pressured Hegseth over critically low munitions stockpiles resulting from the Iran conflict, Trump defended his defense secretary on Truth Social on August 8. “I am extremely happy with the job that Pete Hegseth is doing,” Trump wrote. “Pete is highly respected within the Military, and has made tremendous improvements, including getting rid of DEI, and increasing recruitment to historic levels.”
Republicans have handed Hegseth significant wins on other fronts. Last year, GOP leaders boosted military spending by $150 billion through a party-line vote on the One Big Beautiful Bill Act. This year, Republicans voted unanimously to rename the Department of Defense to the Department of War and to further gut diversity and inclusion efforts in the military. But the $1.5 trillion budget request represents a different scale of political challenge, and GOP unity is fracturing under the weight of Trump’s demand.
Sources
- Politico — reporting on Hegseth’s failed efforts to persuade Republicans to back the $1.5 trillion budget, GOP skepticism on reconciliation, and quotes from Murkowski, Rounds, and McConnell
- PBS NewsHour — Hegseth’s testimony on the 2027 defense budget and Iran war costs
- The Washington Post — reporting on House passage of $1.15 trillion defense bill and Iran war funding
- Federal News Network — McConnell and Collins statements ruling out a third reconciliation bill
