Article 1 of the U.S. Charter provides Congress the ability to claim struggle, now not the president. However most current presidents and their prison suggest have asserted that Article 2 of the Charter lets in the president to make use of the army in positive eventualities with out prior congressional approval – and feature acted on that, sending troops into conflicts from Panama to Libya, with out a regard for Congress’ will.
Congress has for essentially the most section registered handiest feeble and useless opposition to such govt motion. The present transfer in Congress to disclaim President Donald Trump the facility to proceed the struggle with Iran – led through Democrats, however with some Republican beef up – will most likely fail, as have earlier efforts all over different conflicts.
However there used to be a time when American citizens noticed Congress rise up to a president who unilaterally took the rustic to struggle.
It used to be on the tail finish of the Vietnam Warfare, when Congress handed the Warfare Powers Answer of 1973, announcing that it used to be legislators – now not the president – who had the ability to claim struggle.
As soon as it handed each homes, President Richard Nixon vetoed it, claiming it used to be unconstitutional.
In reaction, the legislative department overturned the veto with the two-thirds majority vote had to succeed.
In comparison to Congress’ limp reaction to Trump’s movements in Iran, and its an identical failure to claim itself all over Trump’s army motion in Venezuela, it used to be a wide ranging act of legislative statement.
The ‘purpose and policy’ segment of the 1973 Warfare Powers Answer handed through Congress.
Nationwide Archives
Congress asserts itself
Once they debated the Warfare Powers Answer, participants of Congress had been seeing the erosion in their keep an eye on over the verdict to interact in army operations huge and small. With a powerful bipartisan consensus, they decided they needed to jointly use their powers, together with the ability of the handbag, to thwart govt overreach.
Congress’ movements got here based on the rising protests towards the Vietnam Warfare typically and Nixon’s determination to extend the struggle through sending U.S. troops to invade the impartial nation of Cambodia to disrupt the provision strains of the Viet Cong, the communist guerrilla drive that accounted for a lot of the 58,000 American citizens killed within the struggle.
Nixon had begun covert carpet bombing of Cambodia in 1969, after which introduced in 1970 that he would ship flooring troops into the rustic the following yr.
Congress – and the rustic– reacted extraordinarily negatively. Contributors of Congress collaborated throughout birthday celebration strains to draft law in an try to assert their energy. It used to be a gradual procedure, then again, involving lengthy classes of deliberation.
The solar units at the back of a plume of smoke emerging after a U.S.-Israeli army strike in Tehran, Iran, on March 3, 2026.
AP Picture/Vahid Salemi
They used many various how you can try to constrain the president. Inside of months of the creation of troops to Cambodia, Congress tried to move amendments that may prohibit his skill to invade neighboring international locations. Brought on through protesting and the unlawful movements in Cambodia, Congress started crafting law that may draw down troops in Vietnam.
With those strikes, lawmakers positioned immense drive at the president. This in the end resulted in the drafting and eventual signing of the peace settlement finishing the Vietnam struggle in 1973.
This used to be now not sufficient for Congress, then again.
Laws – and versatility
Congress sought after to create a report making sure presidents may just now not unilaterally make struggle. They sought after legislative session.
They supposed the Warfare Powers Answer to behave as an everlasting constraint. So, within the solution they spelled out the precise movements during which presidents can get started a struggle:
• First, if there’s an invasion of america, the president can reply. On this example, the president can act previous to congressional authorization.
• 2nd, if Congress supplies an “Authorization for the Use of Military Force,” the president can think he has authorization – however handiest so long as it’s in impact.
• In spite of everything, if Congress proclaims struggle, the president can act.
Lawmakers did, then again, supply some flexibility. Within the Warfare Powers Answer, they mentioned a president can start up and perform hostilities for 60 days and has an extra 30 days to attract down the troops. As soon as the chief has initiated hostilities, Congress will have to obtain details about that motion inside of 48 hours.
This opens the door for presidents to interact in smaller-scale or brief operations with out stepping outdoor the strains set within the regulation.
Presidents from each events have availed themselves of this adaptability. Way back to 1975, when President Gerald Ford rescued the SS Mayaguez, the service provider send captured through Cambodia’s Khmer Rouge, presidents have said the regulation and dutifully reported their army movements to Congress.
Like his predecessors, Trump despatched a letter to Congress after his June 2025 missile assaults towards Iran, in addition to originally of the recently open-ended struggle.
President Donald Trump after touchdown aboard Air Drive One on March 1, 2026, at Joint Base Andrews, Maryland.
Roberto Schmidt/Getty Pictures
Presidents for the reason that passage of the Warfare Powers Answer have now not, then again, said that they’ve to get congressional approval in their movements, with few exceptions. Predominantly, with out congressional approval, they restrict their movements to the 60-to-90-day window.
President Barack Obama, then again, tried to bypass the window when his bombing marketing campaign in Libya in 2011 dragged on, in addition to when he bombed the Islamic State crew in 2014. Within the first example, he claimed the Warfare Powers Answer didn’t practice. In the second one, he claimed every bombing marketing campaign used to be discrete, quite than a part of a bigger marketing campaign.
Exploiting authorizations
The steadiness of energy between the legislative and govt branches modified significantly with the passage of the 2001 Authorization for Use of Army Drive associated with the 11th of September, 2001, terrorist assaults, and the 2002 Authorization for Use of Army Drive that gave legislative permission for President George W. Bush to invade Iraq.
As a result of Congress didn’t put sundown dates into those authorizations, next presidents Obama, Trump and Joe Biden used those self same authorizations for a bunch of later army movements within the Heart East and in other places.
And legislators are deeply divided within the present discussions about not easy the cessation of hostilities towards Iran.
Republican Area Speaker Mike Johnson says that proscribing the president at the moment is “dangerous.” Former congresswoman Marjorie Taylor Greene – who has fallen out of style with Trump’s MAGA base and the president himself – took the opposing view, posted on social media, “Now, America is going to be force fed and gas lighted all the ‘noble’ reasons the American ‘Peace’ President and Pro-Peace administration had to go to war once again this year, after being in power for only a year.”
Has the U.S. entered a second when participants of Congress reassert themselves the best way they did on the tail finish of the Vietnam struggle?
It’s conceivable that they are going to observe James Madison’s recommendation concerning the energy dating between Congress and the president. Writing within the Federalist Papers, Madison mentioned that “ambition” has “to counter ambition.” He persisted, “The interest of the man must be connected with the constitutional rights of the place. It may be a reflection on human nature, that such devices should be necessary to control the abuses of government.”
As I provide an explanation for in my ebook about congressional struggle powers, the constitutional machine creates a call for participation to combat. Now, because the U.S. wages struggle on Iran, Congress will have to come to a decision whether or not it desires to combat, because it did all over the Vietnam Warfare, or stay compliant and within the president’s shadow.
