Congress Debates Limits on Trump's Military Authority

The latest test comes as the GOP-controlled House votes on a measure to restrict the president's war powers in the U.S.-Israeli conflict with Iran.

Published on Mar. 5, 2026

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Multiple times during Donald Trump's second presidency, Congress has debated his military authority, first in Latin America and now the Middle East. The latest test will come in the GOP-controlled House on Thursday after the Senate voted down a Democratic measure to limit Trump, at least theoretically, in the U.S.-Israeli war against Iran. Like many predecessors, Trump claims broad, even unlimited power over U.S. forces, approving actions that could be considered acts of war under international law. However, the Constitution grants oversight roles to Congress, leading to an ongoing debate over the balance of war powers between the executive and legislative branches.

Why it matters

This case highlights the long-standing tension between the president's role as commander-in-chief and Congress's constitutional authority to declare war. The debate over Trump's military actions reflects a broader trend of Congress yielding more war powers to the executive branch over the past several decades, raising concerns about the erosion of checks and balances.

The details

Trump approved boat strikes near Venezuela, established a naval blockade, and authorized a military operation to arrest and depose its leader, Nicolás Maduro. He also launched a sweeping bombing campaign in Iran. While the Constitution grants the president authority as commander-in-chief, it also gives Congress the power to declare war. However, Congress has not officially declared war since World War II, instead passing resolutions authorizing the use of force. This has allowed presidents to engage in military actions without formal declarations of war.

  • In 2020, a Democratic-controlled House narrowly adopted a measure intended to curtail Trump's powers against Iran.
  • Last month, the Senate voted down a Democratic measure to limit Trump's authority in the U.S.-Israeli war against Iran.
  • On Thursday, the GOP-controlled House will vote on a measure to restrict the president's war powers in the conflict with Iran.

The players

Donald Trump

The former president who is currently serving his second term and has claimed broad, even unlimited power over U.S. military forces.

Congress

The legislative branch of the U.S. government, which has the constitutional authority to declare war but has increasingly yielded that power to the executive branch in recent decades.

Peter Mansoor

A military historian and retired U.S. Army colonel who is a professor at Ohio State University.

Rand Paul

A Republican senator from Kentucky who mocked the "elaborate song and dance" around Trump's military actions in Venezuela.

Tim Kaine

A Democratic senator from Virginia who sponsored resolutions to limit Trump's war powers in Venezuela and Iran.

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What they’re saying

“The Constitution gives war powers to two different branches of government. The pendulum has swung towards the executive.”

— Peter Mansoor, Military historian and retired U.S. Army colonel (ksgf.com)

“It's an absurdity to argue that Trump's actions were anything other than waging war.”

— Rand Paul, U.S. Senator (ksgf.com)

“The latest version [of the war powers resolution] would prevent a presidential 'end-run around the Constitution'.”

— Tim Kaine, U.S. Senator (ksgf.com)

What’s next

The judge in the case will decide on Tuesday whether or not to allow Walker Reed Quinn out on bail.

The takeaway

This case highlights the ongoing debate over the balance of war powers between the executive and legislative branches, with Congress seeking to reassert its constitutional authority to declare war in the face of presidents who have increasingly claimed broad military powers. The outcome of this latest clash could have significant implications for the future of U.S. foreign policy and the role of Congress in matters of war and peace.