Trump starts Iran war without Congress triggering constitutional crisis

Article I, Section 8 of the Constitution gives Congress — not the president — the power to declare war. That power was deliberately put in the hands of the legislative branch so no single person could unilaterally commit the country to armed conflict. The last formal declaration of war Congress issued was in 1942, during World War II. Every military action since — Korea, Vietnam, Iraq, Afghanistan, and now Iran — has proceeded without one.

The War Powers Resolution of 1973 was passed to rein in presidential war-making after Vietnam. It requires the president to notify Congress within 48 hours of committing forces to hostilities and sets a 60-day clock: if Congress doesn't authorize the action within that window, the president must withdraw. Every president since Nixon has disputed the resolution's constitutionality, and none have fully complied with it.

Before the strikes began, Reps. TMThomas Massie (R-KY) and RKRo Khanna (D-CA) had introduced a joint War Powers resolution specifically to block Trump from attacking Iran without congressional approval. Senate Democrats Tim Kaine and Adam Schiff had a companion bill in the Senate. Those resolutions were expected to come to a vote the week of March 2. The strikes happened first, making the votes a referendum on whether to order Trump to stop rather than prevent the war.

Congress was notified ahead of the strikes, as required by law — but with limited information. Secretary of State MRMarco Rubio called members of the Gang of 8 before the operation began. The notifications referenced ballistic missiles but did not signal the scale or the stated regime-change objective. Multiple congressional offices told ABC News the briefings were incomplete. Schumer said the administration failed to provide 'critical details about the scope and immediacy of the threat.'

Senate Majority Leader JTJohn Thune (R-SD) backed Trump fully, publicly thanking Rubio and praising the president for 'taking action to thwart these threats.' Speaker Mike Johnson said Iran had 'the chance for a peaceful solution' and that Trump had made 'every effort to pursue' diplomacy. House Intelligence Committee Chairman Rick Crawford, who was briefed ahead of the strikes, called the action 'justified.'

The partisan breakdown was not clean. Sen. John Fetterman (D-PA) praised Trump, writing that 'God bless the United States, our great military, and Israel.' Sen. Mark Warner (D-VA) demanded a clear legal justification and end state. Sen. RGRuben Gallego (D-AZ), a veteran who served in Iraq, said 'I lost friends in Iraq to an illegal war.' The cross-party fractures — with some Democrats backing Trump and some Republicans opposing him — complicated the arithmetic for any War Powers vote.

Legal scholar Jonathan Turley argued Trump has precedent on his side: Clinton struck Sudan and Afghanistan, Obama bombed Libya, and Biden struck Houthi targets in Yemen — all without congressional declarations. But DJDavid Janovsky of the Constitution Project told TIME that no precedent exists for unilateral presidential authority to start a war of this scale with regime change as an explicit goal. The distinction between a limited strike and a sustained war aimed at toppling a government is legally significant.

Trump himself used the word 'war' in his Truth Social video, saying 'the lives of courageous American heroes may be lost, and we may have casualties — that often happens in war.' Legal experts noted that a president acknowledging casualties in a war he started without congressional authorization creates a more difficult constitutional defense than presidents who described operations as limited or defensive. The more expansive the stated goals, the harder it is to argue no authorization was needed.

Rep. Jim Himes (D-CT), the top Democrat on the House Intelligence Committee, said: 'Everything I have heard from the Administration before and after these strikes on Iran confirms this is a war of choice with no strategic endgame.' Sen. Tim Kaine and Sen. RPRand Paul, from opposite ends of the political spectrum, both called for Congress to check Trump's war-making power — a bipartisan position that reflects how seriously some members take the constitutional issue regardless of their views on Iran.