Donald J. Trump is fond of trumpeting his own real (or imagined) skills.

The night that he accepted the Republican Party’s presidential nomination, Trump proclaimed that “I, alone” can solve the nation’s problems. Then he ran a successful presidential campaign, got elected, put his hand on a Bible and took the oath of office this past January.

The brand new president then delivered a dark speech that didn’t speak to the nation’s ideals, but instead recited a grim litany of heartache and alleged failure. The only line many of us can remember from that speech goes like this: “The American carnage is going to stop … right here and right now.”

Where am I going with this?

A president who boasts that he “alone” can fix any problem needs to explain why he hasn’t stopped “the American carnage.”

Case in point: In just the past few months, we have seen nine people killed when a terrorist ran over them with a rented truck in New York City; a madman opened fire on a Las Vegas crowd, killing 59 of them; another lunatic then walked into a Sutherland Springs, Texas, church and killed 26 more people.

The American carnage that Trump said he would stop has continued.

What has been his solution to any of it? What has he proposed to protect people from gunmen or international terrorists? Has the president produced any legislative remedies? Has he articulated the need to act to stem this violence?

I know full well that presidents cannot act alone, even though the current president said he can and promised he would. And that brings me back to my point.

If Donald Trump is able to do the myriad things he has boasted he could do, then isn’t it time he delivered the goods?

The man needs to spend more time, devote more attention and deploy his self-proclaimed immense intelligence to things that really matter — and stop wasting his time tweeting about football players’ protests and whether he did enough to bail three young basketball players out of jail.