WASHINGTON—The U.S. House, on June 3, passed a resolution to withdraw U.S. troops from armed hostilities with Iran. Lawmakers voted 215–208 for the Democrat-led measure. Four Republicans voted with Democrats in support of the resolution. The measure invokes the 1973 War Powers Resolution to halt the Iran conflict or otherwise force U.S. President Donald Trump to obtain congressional approval to continue the military operations against Iran that began on Feb. 28. Lawmakers in the House and U.S. Senate have raised multiple previous failed attempts to pass such legislation to constrain Trump’s war-making authority in the current conflict. This is the first time such a measure has passed in either chamber since the conflict began....