President Trump's unilateral cancellation of $810 million in congressionally approved spending has reignited a constitutional clash over the power of the purse, prompting lawmakers from both parties to explore ways to prevent future executive overreach. The move, which the Government Accountability Office has already challenged, is the latest in a series of funding freezes and unauthorized military actions that critics say undermine the legislative branch's foundational role.
According to reports, bipartisan discussions are underway about adjusting future appropriations bills to make it harder for the White House to withhold or delay funds. But many constitutional scholars and former lawmakers argue that piecemeal fixes are insufficient. They contend that Congress must take bolder steps to restore its authority, particularly in the realms of spending and war-making, where presidents have repeatedly tested the limits of their power.
The framers designed Congress as the primary arbiter of taxpayer dollars, granting it exclusive authority to decide how federal funds are spent. While tension between the executive and legislative branches over budgeting is as old as the republic, Trump's actions represent a deliberate attempt to dismantle the remaining guardrails. His tactics echo the 1970s, when President Richard Nixon refused to spend billions of dollars approved by Congress. In response, lawmakers passed the Impoundment Control Act, which generally requires the president to spend appropriated funds.
However, presidents have exploited ambiguities in that law to justify funding freezes. The Trump administration has escalated this practice dramatically, withholding or delaying hundreds of billions of dollars for foreign aid and other programs, and gutting funding for independent agencies. Courts have often stepped in to force compliance, but Congress needs to act proactively to close the loopholes that allow such abuse.
A comprehensive overhaul of the Impoundment Control Act could eliminate the vague language that administrations have used to justify withholding funds. Strengthening congressional oversight mechanisms would also ensure that approved money actually reaches its intended recipients. Additionally, in the wake of Trump's use of private donations for projects like the White House ballroom, lawmakers should impose stricter limits on when presidents can bypass normal appropriations processes with outside funding.
The other critical front is war powers. The Constitution gives Congress, not the president, the power to declare war and to raise, support, and regulate the military. The War Powers Resolution of 1973 was meant to reinforce that balance, requiring presidents to notify Congress within 48 hours of introducing forces into hostilities and to withdraw them after 60 days without authorization. Yet that law has proven an inadequate check. Trump has launched unlawful hostilities in Iran, Venezuela, and Ecuador, while stonewalling congressional oversight. It took months for Congress to respond even to the Iran conflict, which continues unabated.
Experts suggest that strengthening the War Powers Resolution could involve shortening the 60-day window, clarifying terms like "hostilities," and adding a judicial review provision so courts can correct misinterpretations. As Rep. Elizabeth Holtzman, who served during the Nixon era, recalled, "There were a lot of bills that became law which were in response to Nixon's arrogation of power. Congress had finally said 'enough is enough.'"
Now, half a century later, Congress faces a president with little regard for separation of powers. The institution must reclaim its constitutional authority—not just on this latest spending cancellation, but on the broader questions of spending and war. Only then can it truly serve as the people's branch, as the framers intended.
