The U.S. military launched joint strikes with Israel against Iran beginning Saturday, February 28, without a congressional vote, and the legal framework the Trump administration is using to justify the operation is one that virtually every modern president has relied on, including Barack Obama.
President Trump confirmed the strikes on Saturday. Secretary of State Marco Rubio said the U.S. was not going to "sit there and absorb a blow." Defense Secretary Pete Hegseth held a press conference on Monday, laying out the rationale. Administration officials said they notified the congressional "Gang of Eight" ahead of the operation.
Congressional Democrats responded on cue. Virginia Senator Tim Kaine went on "Fox News Sunday" and declared the strikes illegal, announcing he had a war powers resolution ready for a vote. Some Republicans joined the criticism. None of which changes the fact that the constitutional argument behind these strikes is older than anyone serving in Congress.
Gene Hamilton, former White House deputy counsel and president of America First Legal, laid out the administration's legal position in plain terms on Tuesday:
"The Constitution, in Article II, Section 2, vests the President with powers as the Commander in Chief. He is ultimately vested with operational command of the military. The Founders understood and would not have required the President of the United States to go before Congress and seek approval every time he needed to act to secure U.S. interests with military assets abroad."
Hamilton argued that the Constitution does not block a president's inherent ability to use military force to defend American interests. He described the alternative as absurd:
"'Making war' would require the president to engage in a glorified act of cat herding every time he believes military action of any kind is necessary, an outcome so nonsensical it needs no further explanation."
He also pointed to the intelligence dimension, noting that the White House has "access to intelligence that puts them in the best position to make these decisions, invoking our inherent right to self-defense."
This isn't a novel theory. It's the same constitutional logic the Obama administration's Office of Legal Counsel used in a 2011 opinion to justify the Libya intervention. It's the same logic the Clinton administration used when it put 20,000 troops on the ground in Haiti in 1994. The Article II commander-in-chief power has long been the go-to legal authority for military action across party lines.
Cully Stimson, Heritage Foundation senior legal fellow and acting director of the Institute for Constitutional Government, described the dynamic in a Monday phone interview with Fox News Digital:
"Whether you agree or disagree with Obama or any of the other presidents who used military force, like in Haiti with 20,000 troops on the ground (in 1994 under the Clinton administration), this is what the founders anticipated when they divided the power."
Stimson situated the current debate exactly where it belongs: in the structural tension between Article I, Section 8, Clause 11, which gives Congress the power to declare war, and Article II, which vests the president with command of the military. That tension is not a bug. It's a feature dating back to 1787.
"They did not want to have what we had in Mother England, where the king made the decision alone."
But the founders also didn't want a commander in chief who had to poll 535 legislators before responding to a threat. Stimson noted that most modern presidents "have used the military in the national interest of the United States, and they determine what is in the national interest … without congressional authorization." The question is always whether the engagement becomes "prolonged and substantial," at which point the War Powers Resolution's clock starts ticking.
The War Powers Resolution, enacted in 1973, requires the president to notify Congress within 48 hours of committing forces and sets a 60-day clock, with a possible 30-day extension, to end the operation absent a declaration of war or specific statutory authorization. Trump has said the operation is expected to last "just a month or five weeks." That timeline, if it holds, would land squarely within the resolution's window.
Stimson noted that the legal question turns on whether the president "reasonably thinks or represents that there's no anticipated prolonged military engagement." If the operation stays within the timeframe the administration has outlined, the War Powers Resolution argument against it collapses on its own terms.
The administration's justification isn't built on abstraction. A White House official stated Tuesday that Iran "has spent the last four decades attacking Americans to pursue its radical agenda and the last four weeks manipulating the diplomatic process to buy time to build up its offensive military capabilities, increasing the regime's threat to U.S. personnel, our bases, and allies in the region and around the world."
Hegseth was more specific at Monday's press conference:
"Iran's stubborn and self-evident nuclear pursuits, their targeting of global shipping lanes and their swelling arsenal of ballistic missiles and killer drones were no longer tolerable risks. Iran was building powerful missiles and drones to create a conventional shield for their nuclear blackmail ambitions."
He also made the administration's posture clear: the operation "is not a so-called regime change war." This is about neutralizing a direct and growing threat to American personnel and interests, not about nation-building.
Hamilton reinforced the point with history:
"In the case of Iran, there is a documented, demonstrable history of the Iranian regime engaging in overt acts of hostility against U.S. interests for decades. Many innocent Americans have died as a result of direct or indirect attacks by Iran through proxy actors."
Tim Kaine wasted no time framing the strikes as unconstitutional. On Fox News Sunday, he put it bluntly:
"This is an illegal war. I have a war powers resolution queued up for vote this week, and I'm encouraging my colleagues to assert the constitutional power vested in the legislative branch."
He added that "the Constitution can't be changed by statute. The Constitution says no declaration of war without Congress."
Kaine is a sincere war powers hawk. He has been consistent on this across administrations, which deserves acknowledgment. But consistency doesn't make him right. The legal precedent he's fighting isn't a Trump innovation. It's a bipartisan inheritance.
Consider the contradiction embedded in the broader Democratic position. Many of the same lawmakers now calling these strikes "illegal" had no similar urgency when Obama committed U.S. forces to Libya in 2011 under the same Article II theory. The Office of Legal Counsel produced a formal opinion blessing the Libya operation without congressional authorization. The operation lasted months. Congress never voted. The same constitutional text governed then as now.
If Article II authority was sufficient to bomb Libya without a vote, it doesn't suddenly become insufficient when a Republican uses it against a regime that has spent four decades killing Americans and building nuclear weapons. The Constitution didn't change between administrations. The party in the White House did.
Kaine's war powers resolution will get a vote. It may even attract some Republican support; war powers skepticism is not exclusively a Democratic trait, and the libertarian wing of the GOP has long been wary of executive military action. Whether it passes is another matter. Whether it changes anything operationally is yet another question.
The administration has set its own timeline. A month, maybe five weeks. The 60-day War Powers clock gives it room. The Article II authority gives it legal cover. The four-decade record of Iranian aggression justifies it.
Hegseth summed up the posture in three words: "Our president has guts."
Congress is welcome to assert its constitutional prerogatives. That's what the founders intended. But the founders also intended a commander in chief who could act when American lives and interests faced a clear and present danger, without waiting for a floor vote and a quorum call.
Iran spent decades testing every president's patience. This one decided the test was over.