Mark Cuban and Donald Trump keep finding one another on Twitter. (Cuban: Michael Loccisano/Getty Images for DCP; Trump: Mandel Ngan/AFP/Getty Images)

President Trump’s Sunday morning tweets this week contained a shot at Dallas Mavericks owner Mark Cuban in which the president said the “Shark Tank” star is “not smart enough to run for president!”

Cuban and Trump have gone back and forth ever since Trump’s campaign heated up, with Cuban making a campaign appearance for Hillary Clinton.

It isn’t immediately clear why Cuban was on Trump’s mind and the Mavericks owner responded with a succinct “LOL” tweet and then added, “Isn’t it better for all of us that he is tweeting rather than trying to govern?” Cuban also tweeted images of correspondence he had with Trump last April, writing “how soon they forget” and sharing what advice he had given then-candidate Trump.

“To make it work you have to really dig in on the issues. It’s like the tech stuff today. The number of tech IPOs has fallen off a cliff. There are hardly any new public tech companies. So when you say there’s a bubble, it sounds like you are winging it. Which also makes it sound like your comments are based on who you talked to last. Which tells me you are getting bad advice. I get that a big part of your base doesn’t care about issue details, but to be president you have to dig in and know your [expletive]. You don’t have to bore people with details but you have to learn the details.”

In a Sunday morning email to The Washington Post, Cuban said he had been told that Trump was reacting to a New York Post story in which Cuban is mentioned as a possible challenger for Trump in the 2020 presidential campaign. The New York Post, citing two sources close to the administration, reported that chief strategist Steve Bannon asked consultants to scour the backgrounds of Cuban, Ohio Sen. Sherrod Brown, Connecticut Sen. Chris Murphy and Colorado Gov. John Hickenlooper.

Cuban, the story states, is considered the most formidable foe because he could appeal to Republicans and independents. “He’s not a typical candidate,” one of the unnamed sources said. “He appeals to a lot of people the same way Trump did. … If you believe in the Trump revolution, you can believe a candidate like Mark Cuban could win an election. And Mark is the kind of guy who would drop half a billion dollars of his own money on the race.”

Or perhaps the president just caught up with Cuban’s take on the tough spot that CEOs of companies are in with Trump in the White House. Last week, Under Armour CEO Kevin Plank was ripped by one of his companies biggest stars for saying “to have such a pro-business president is something that is a real asset for the country.” Stephen Curry said he agreed “if you remove the ‘et’ .”

“I’m proud of Steph for standing up for what he believes in,’’ Cuban said (via the Star-Telegram) last week. “It’s a tough situation for CEOs.

“You want to make nice with the president because you’re a public company and you have shareholders, and it’s hard to balance doing the right financial thing versus doing what they think is the right thing, whatever your political beliefs are. It’s not an easy position to be in.’’

Cuban acknowledged in the Star-Telegram story that he can say what he pleases because he doesn’t run a public company, but urged CEOs to just “do what you think is right. Be an American citizen first.

“In the bigger scheme of things, our country benefits from peaceful activism a lot more than it benefits from one more shoe being sold, or one more basketball ticket being sold, for that matter. The people that say stay away from politics are the people that are looking for politics.’’