"The politics of 'gotcha' are over. I have thick skin and we're moving on to @POTUS agenda serving the American people," he wrote in a follow-up tweet nearly two hours later.
Scaramucci's old tweets began resurfacing Friday. Some have been deleted, but they've since been immortalized by other Twitter users.
In a pair of 2012 tweets, one of which has not yet been deleted, he said that the United States has too many guns and that he's "always been for strong gun control laws."
"We (the USA) has 5% of the world's population but 50% of the world's guns," he wrote in the deleted tweet. "Enough is enough. It is just common sense it apply more controls."
Laura Goldman, who said she is friends with Scaramucci, came to his defense on the policy matter Saturday, saying his 2012 tweet advocating gun control was a response to her.
"He answered because that's the kind of guy he is. . . . He shouldn't be crucified for his politeness in answering tweets to a friend before he starts his job," Goldman said in an email to The Post.
Scaramucci also praised former Massachusetts governor Mitt Romney in 2011 for staying out of the "Trump spectacle" and called former House speaker Newt Gingrich, a Trump ally, an "odd guy" who's "so smart with no judgment."
A few other tweets still appear to be on Scaramucci's profile.
In another 2012 post, he appeared to be advocating liberal causes, describing himself as "for Gay Marriage, against the death penalty, and Pro Choice."
That same year, he said: "I like Hillary. Have to go with the best athlete. We need to turn this around."
In a 2016 tweet that appears to contradict Trump's previous statements against Islam, he said:
He railed against climate-change deniers:
"You can take steps to combat climate change without crippling the economy. The fact many people still believe CC is a hoax is disheartening," he tweeted in 2016.
And against Trump's plan for a wall along the US-Mexico border:
"Walls don't work. Never have never will. The Berlin Wall 1961-1989 don't fall for it," he tweeted in 2015.
He also appeared to favor another former Republican presidential candidate over Trump:
"Big number for @JebBush people just need to get to know him. Will make a great President."
- Anthony Scaramucci (@Scaramucci) October 15, 2015
In a 2015 Fox Business Network interview, Scaramucci called Trump a "hack" and a bully and said he didn't like how the presidential candidate talked about women.
"He's a hack politician. . . . I'll tell you who he's going to be president of - you can tell Donald I said this - the Queens County bullies association," he said.
Now Scaramucci has shifted from criticising Trump to telling reporters several times he loves the president. He also apologised for calling Trump a hack and said the president still reminds him of his previous comments.
"I should have never said that about him," he told reporters at his first press briefing Friday, adding later: "Mr President, if you're listening, I personally apologise for the 50th time for saying that."
Trump weighed in Saturday morning, saying Scaramucci wanted to endorse him but didn't know he was going to run. But as The Washington Post's Aaron Blake pointed out, Trump had been a candidate for a month when Scaramucci called him a hack.
"In all fairness to Anthony Scaramucci, he wanted to endorse me 1st, before the Republican Primaries started, but didn't think I was running!"
