It's all about letting the President decide on his own matters of monumental importance in the realm of US policy.
It's the executive order issued simply by means of his signature--no need for him or her to consult or go through some representative body such as Congress.
Trump wanted a trade war with China and by signing an order he got it. He even determined the terms of the battle.
It happens in the Senate, too. We've seen Senate leader Mitch McConnell of the dominant party can hold up any bill simply by not placing it on the Senate's agenda. And, nobody, but nobody can meaningfully object to it!
Supposedly, this country is a democracy, but I think that Trump, as one President flirting with Kingship, has shown that the people's input isn't necessary to put the country in a whole lot of misery by the President's signing an executive order or by the Senate Majority Leader blocking the people's representatives performing what they supposedly should be doing--namely, setting forth the country's will in formulating government policy.