You obviously are ignorant of the two AUMF's still in effect covering the ME regarding the 911 attack and Bush's NeoCon regime building plans; PL 107-40 (2001) and PL 107-243 (2002). Neither authorized an Act of War on Iran AND the WarPowers Act!
Trump gave Congress notice of the assassination just before the 48 hours deadline REQUIRED by the War Powers Act to keep his ass off the BBQ spit. If NO EXISTING AUMF covered the military action and assissination, AN ACT OF WAR, that notification to Congress by Donny Orange within 48hrs was absolutely required.
It's painfully obvious that someone in the Orange Clown's coven of sycophantic ass-kissers let him in on the fact that NO AUMF COVERED the assassination of Gen Soleimani so, the notification of the attack HAD to be and was made according to the LAW. Read the War Powers Act at 50 USC §§ 1541-1548 and quit pulling bullshit out your dumb, fabricating lemming ass.