Congress Gave Trump Its Power. Now It Doesn’t Know How to Get It Back

Congress’s long‑running surrender of oversight has left it unable to restrain Trump’s Iran war, as lawmakers who ceded power now watch an unauthorized conflict expand, deepen executive dominance, and set precedents future presidents will inherit.
Joe Biden silhouetted walking in US Capitol Rotunda towards a backlit American flag.

James Madison designed a system in which institutional ambition would check institutional ambition — each branch defending its own authority as a matter of political self-preservation. What he did not anticipate, Senator Rand Paul observed on his way to cast a lone Republican vote against the Iran war, was a legislature with no ambition left to defend. The Senate voted 47–53 on March 4 against a resolution that would have required congressional authorization for military action against Iran. It was not a close call. It was a ratification.

The Iran war is the most dramatic example of a pattern that predates it. Over the past fourteen months, a Republican-controlled Congress has allowed the executive branch to impound congressionally appropriated funds, dismantle agencies without legislative consultation, levy sweeping tariffs, and now launch a war — all without formal authorization, and often without meaningful objection. House Speaker Mike Johnson set the tone in January when he said he had “no intention of getting in the way” of the president. He meant it.

How a Legislature Becomes a Rubber Stamp

The abdication did not begin with Trump. Congress has not declared war since 1942, and has routinely declined to vote on military authorizations even when administrations requested them. The War Powers Resolution of 1973 — passed to prevent exactly this situation — has never successfully constrained a president. Obama asked Congress to authorize strikes against ISIS in 2014; lawmakers declined to vote. Biden never requested authorization for any significant military action. The precedent that presidents can deploy force without legislative approval has been constructed across decades by both parties, and Trump is simply exploiting an edifice that was already standing.

What has changed under the second Trump term is the speed and scale of executive expansion. Trump issued 225 executive orders in 2025 alone — compared to 55 in the first year of his first term and 77 under Biden in 2021. Congress, meanwhile, passed 68 public laws in 2025, many of them simple repeals of Biden-era rules. The productive output of the legislature has shrunk to the point where one of the House’s early bills in 2026 codified a Trump executive order allowing higher water-flow shower heads. This is what a co-equal branch of government looks like when it stops functioning as one.

The Supreme Court has shown more resistance than Congress. A Gorsuch-authored opinion struck down most of Trump’s tariffs as an infringement on legislative authority, reminding everyone that “the deliberative nature of the legislative process was the whole point of its design.” Trump’s response was to impose new tariffs under a different legal authority, and Congress did nothing. The pattern is consistent: courts push back, Congress doesn’t, and the net effect is a slow expansion of the zone in which executive action operates unchallenged.

Emergency declarations have become the preferred mechanism for bypassing the legislature entirely. Trump has declared eleven national emergencies since taking office, covering trade deficits, fentanyl trafficking, energy policy, and the Iran war. Paul — one of the few Republican voices who has consistently opposed this trend — noted that a dozen colleagues expressed interest in constraining emergency powers when a Democrat held the White House. After January 2025, they “melted into the ether.” The structural logic is not complicated: primary challenges, social media exposure, and the organizational power of Trump’s base make defection costly in ways that defending institutional prerogative simply is not.

The Cost of Atrophied Oversight

The institutional damage is measurable. The national debt has climbed past $38.8 trillion. The DOGE reorganization shuttered and restructured agencies while congressional oversight committees were largely ignored. Defense appropriations for munitions replacement — urgently needed now that the Iran campaign has burned through years’ worth of cruise missiles and missile interceptors — were not pre-positioned because Congress never funded the production increases the Pentagon requested.

There are early signs that political self-interest is beginning to reassert itself where principle did not. As Trump’s approval rating slides and midterm forecasts darken, Republican lawmakers have started writing spending guardrails into appropriations bills and showed new willingness to challenge administration nominees. Senator Tim Kaine described congressional oversight as “a muscle weakened through lack of use” that is “getting stronger.” That is a generous framing for a legislature that just authorized a war by declining to stop it.

The deeper question is whether the precedents being set now can be reversed after the political climate shifts. Executive power, once ceded, is rarely reclaimed voluntarily. The Iran war has no congressional authorization and no clear endpoint. When it ends — however it ends — the template it established will remain, available to the next president, regardless of party.


Original analysis inspired by Liz Goodwin from The Washington Post. Additional research and verification conducted through multiple sources.

By ThinkTanksMonitor