Democrats in Congress are exploring a lawsuit against President Donald Trump if he continues the war in Iran beyond Friday’s legal deadline without obtaining congressional authorization, multiple sources familiar with the matter tell TIME, setting up a potential constitutional clash over presidential war powers as Congress prepares for another vote this week. The internal discussions, which have not been previously reported, were described by lawmakers as still in the early stages but could intensify in the coming weeks if the President presses ahead with military operations after a critical 60-day deadline expires on May 1. Interviews with dozens of Democrats in the House and Senate show a party increasingly grappling with how to enforce limits on Trump’s war with Iran, convinced that the looming 60-day mark under the War Powers Resolution may be their strongest opportunity yet to challenge a war they say was launched illegally and sustained without meaningful congressional oversight .…