As effective as a fart in a windstorm
Health Care? Nope
A speech to the Boy Scouts, the aftermath of which was the Boy Scouts - THE BOY SCOUTS - effectively calling him a liar.
An exhortation to give suspects a rough ride when arrested - pushed back strong from the police dept he spoke to, and more importantly, his own DEA head.
His immigration bill - authored by two senators and endorsed by him because, well, he'll take ANYthing for a win - appears DOA even before it gets started.
His new Chief of Staff, called Jeff Sessions and told it was all cool - effectively telling Two Scoops to sit down and shut the fuck up.
That Trans Ban? Nope. The Generals just ignored him. Yes, the military just flat out ignored his sorry ass.
The Border Wall? Maybe we can rename it the Border What?
Pulls out the Paris Accord and the states and cities rush in to make their own deals and uphold what we promised to do.
Pretty much all of his initial senior staff is gone in record time. Only the Czarina and her husband remain. Oh, and the Alt-Right thug in the other office.
The ONLY meaningful legislation he signed was the one sanctioning Russia. And that just about killed him to do it.
That's all just off the top of my head. What else? Some many examples of ineffectiveness. Hard to keep track of them all.