I hope that these cease and we can focus on moving our country forward. — SenDanSullivan (@SenDanSullivan) June 29, 2017

Murkowski and Sullivan, both Republicans, joined several senators who responded to Trump’s tweets saying that he had heard that co-hosts Mika Brzezinski and Joe Scarborough had negative things to say about him on “Morning Joe,” a show he once followed. Trump has since switched his focus to “Fox & Friends” on the Fox News channel.

Trump said that “low I.Q. Crazy Mika” and “Psycho Joe” came to his Florida estate, Mar-a-Lago, for three nights around New Year’s and “insisted on joining” him. “She was bleeding badly from a face-lift. I said no!” Trump tweeted.

I heard poorly rated @Morning_Joe speaks badly of me (don’t watch anymore). Then how come low I.Q. Crazy Mika, along with Psycho Joe, came..— Donald J. Trump (@realDonaldTrump) June 29, 2017

…to Mar-a-Lago 3 nights in a row around New Year’s Eve, and insisted on joining me. She was bleeding badly from a face-lift. I said no! — Donald J. Trump (@realDonaldTrump) June 29, 2017

Sens. Susan Collins of Maine, Ben Sasse of Nebraska and Lindsey Graham of South Carolina also rebuked Trump, citing his behavior as unbecoming of the office of the presidency.

This has to stop – we all have a job – 3 branches of gov’t and media. We don’t have to get along, but we must show respect and civility.— Sen. Susan Collins (@SenatorCollins) June 29, 2017

Please just stop. This isn’t normal and it’s beneath the dignity of your office. — Ben Sasse (@BenSasse) June 29, 2017