There might be only one way to put an end to President Donald Trump's war in Iran — something Supreme Court Justice John Roberts pointed out years earlier, according to a report Wednesday. Roberts has been questioned over his views on the unitary executive theory, the idea that the president should have broad control over the government, and Roberts has even helped grant this administration multiple Supreme Court wins. But Roberts previously took a firm stance on how presidents can control the government and who can ultimately stop wars, The Lever reported. As the United States has entered the 12th day of joint strikes with Israel against Iran, questions have surfaced over who can end the conflict and Roberts had offered a legal basis for war and congressional war powers. "But in this era of judicial deference to executive authority, Congress’ power to limit spending remains largely unchallenged, even by some of the most hardline proponents of presidential authority, such as U.S. Supreme Court Chief Justice John Roberts," according to The Lever. "As a Reagan administration lawyer, Roberts told his bosses in 1985, 'Our institutional vigilance with respect to the constitutional prerogatives of the presidency requires appropriate deference to the constitutional prerogatives of the other branches, and no area seems more clearly the province of Congress than the power of the purse,'" The Lever reported.Congress could throttle Trump's power to continue the conflict. "This contrast — between the weakness of Congress’s non-budgetary legislation and the supremacy of its spending power — explains why modern presidents’ ill-advised wars tend to only conclude when lawmakers threaten to use the latter," according to The Lever.