What did Donald Trump do today?

He made golf a top presidential priority.

Trump spends almost every weekend at one of his private golf resorts. (Formerly an avid player, Trump's time at those resorts is now closed to the press, and it's not clear if his fragile health allows him to play at all.) Today, though, he visited the East Potomac Golf Links in order to promote his plan to give it—as he put it—"the ability to host Major Golf Tournaments, including The U.S. Open, The Ryder Cup, The PGA Championship, and other top PGA Tour events." 

That wouldn't be good news for the locals who actually use the course now, and who would likely be priced out of one of the few affordable DC-area courses if Trump's renovation plans go into effect.

The Trump administration is attempting to seize control of the East Potomac course from the National Links Trust, a nonprofit that had administered them on behalf of the National Parks Service. The reason that Trump gave at the time was that the Trust was in default on its lease, which it disputes. Meanwhile, East Potomac has been in the news for other reasons recently: it's where Trump dumped the construction waste from his demolition of the East Wing of the White House. Heavy metals are leaching into the soil as a result. 

This is the second time in a month that Trump has made golf course renovations a priority. Three weeks ago, he railed at the Democratic governor of Maryland for supposedly holding up improvements to courses at an Air Force base. In reality, the state hadn't done anything to stop the project.

Today's motorcade to the course, which appears to have been hastily arranged, also drove around the site where Trump plans to build what he calls a "triumphal arch." Along with the ballroom he's trying to build on the ruins of the East Wing, and his ongoing attempts to undo the damage he's done to the reflecting pool in front of the Lincoln Memorial, the arch is another pet project he's become fixated on since returning to office. He's taken to carrying around models of it to show people.

From his motorcade, Trump may have been able to see the National Mall, where a cheap plywood scale model of the planned arch was on display at his poorly-attended "National State Fair."

Why does this matter?

• None of the things Trump is obsessing over—golf courses, arches, ballrooms, or anything else—are important in any way, much less the sort of thing a president should be spending time and energy on.