President Donald Trump, who has been unusually quiet since his oldest son tweeted out an email chain with a Kremlin intermediary that occurred during his campaign, weighed in Wednesday morning about Don Jr.’s appearance on Sean Hannity’s Fox News Channel program Tuesday night:

“The sound you hear is the sound of the shovel hitting the dirt and him digging himself even deeper,” MSNBC’s Joe Scarborough reacted to the new tweet.  The Morning Joe co-host announced Tuesday on Stephen Colbert’s late night show that he is going to exit the GOP and become an Independent because the party has come up with a “thousand…excuses to overlook things Trump has said and done.”

Trump followed that tweet with this:

Until 3:19 AM PT, Trump’s public remarks on Tuesday’s revelations had been confined to a statement saying “My son is a high quality person and I applaud his transparency,” read by White House Deputy Press Secretary Sarah Huckabee Sanders at Tuesday afternoon’s off-camera press briefing.

Hours earlier, on Hannity, Don Jr.  said “In retrospect I probably would have done things differently” about his June 2016 meeting with a Kremlin-attached lawyer promising dirt on Hillary Clinton. “Honestly, my takeaway, when all of this was going on, is that someone has information on our opponent,” Don Jr. told Hannity. “Things are going a million miles per hour. You know what it’s like to be on a campaign. We just won Indiana, but we’re talking about a contested convention.”

Since The New York Times broke the story over the weekend about the meeting with Natalia Veselnitskaya attended by Trump Jr., Jared Kushner and Paul Manafort, the story has dominated the TV news cycle and perked up the ears of House and Senate Intel Committee members from both political parties.