President Trump can order a nuclear attack, at his whim, and he seems inclined to do so.
Trump said "Somebody hits us with ISIS - you wouldn't fight back with a nuke?" When nukes' use was disparaged, Trump said "Then why are we making them?". He taunted Tillerson and Kim Jong Un by tweeting "I told Rex Tillerson, our wonderful Secretary of State, that he is wasting his time trying to negotiate with Little Rocket Man.”
Even a limited deployment of nuclear weapons could easily escalate to full nuclear war, initially killing tens of millions. EMP would destroy communications and electric power infrastructure.
In Wisconsin, targets include Madison, Superior, Eau Claire, Green Bay, Appleton, Milwaukee, Mequon, and Racine. Deadly plumes from these would drift hundreds of miles. Most initial survivors would soon die after a wretched and futile search for uncontaminated water and food, and fuel, shelter and medical care.
It is irresponsible and dangerous for Congress to abdicate to the President its constitutional power to declare war. Congress should immediately pass a law that explicitly requires Congress to approve any order by the President for a nuclear attack. Furthermore, Congress should make it unlawful to launch a first strike.