"We don't want you here," the ex-GOP congressman said of Trump supporters who believe conspiracy theories about the 2020 election.
"If we're telling governors to follow the CDC guidelines when Donald Trump is president of the United States, shouldn't they follow the CDC science when Joe Biden is president of the United States?"
"I never understood why we don't go as aggressively after domestic terrorists as we do Islamic terrorists," Scarborough said on Friday.
"A lot of German corporations saw Hitler as a clown. They backed him because they thought he was going to be a bulwark against communism... We've seen a lot of businesses, a lot of CEOs, a lot of the world's richest people, a lot of America's richest people back Donald Trump," said Scarborough.
At one point, he told police officers: "You open the door for them and let them breach the people's house."
"It should have been a little bit of history, and you would understand that Supreme Court justices, they can't do what you're asking them to do," Scarborough said Monday.
"Mr. Trump is debasing his office," the newspaper's editorial board wrote in an opinion piece published Tuesday evening.
President Trump has repeated a debunked conspiracy theory that falsely claims Joe Scarborough committed murder in 2001 against a woman who worked in his office when he was a Florida congressman.
Senator Romney said that while Scarborough can "weather" President Trump's accusations regarding the deceased staffer, the widower's "heart is breaking."
In his letter, Timothy Klausutis said that the conspiracy theories regarding his wife's death have made it difficult for him to move on with his life.
Trump has tweeted several times in recent weeks about the theory that Scarborough was involved in the 2001 death of Lori Klausutis.
"Stop spreading it, stop creating paranoia," Republican Congressman Adam Kinzinger said.
"When he pulls out of the cooperation of the nations of the world in creating a vaccine it hurts us," Schumer told 'Morning Joe'. "If another country comes up with that vaccine ahead of us, God bless them, but we would want to have the benefits of that."
The MSNBC host said the president did not need to "lie" because and suggested there had been "really good news" on the development of coronavirus tests.
"Our constitutional republic, literally, and the institutions in it, literally, are being challenged every single day by this would-be dictator," Joe Scarborough said.
Joe Scarborough blasts conservative Christians for standing by as president evoked Jesus' teachings while attacking rivals.
"It's an 11-year recovery," Joe Scarborough said.
Trump attacked 'The View' co-host for what he described as her getting "fatter," according to an upcoming book by two reporters for The Daily Beast.
Joe Scarborough said President Donald Trump's defense counsel looked "sad and mournful" as he presented the commander-in-chief's case.
"I can't imagine another president at any time having to select a team that would be associated with a pedophile," Joe Scarborough said.
Joe Scarborough said that history will reflect poorly on Republican senators in Trump's impeachment trial, if they do not provide a fair one.
Joe Scarborough's remarks came after Kim Jong Un asserted this week that North Korea "will never" denuclearize.
Joe Scarborough said that some Christian preachers were demonstrating that staying in Trump's good graces was more important than staying true to their faith.
"We know Barr will do anything for Donald Trump," Joe Scarborough said, describing William Barr as the president's "hack."
"This is the most desperate defense," Joe Scarborough said.
During Tuesday's 'Morning Joe,' host Joe Scarborough mocked Donald Trump's claims that he had legal scholars read the transcripts of his Ukraine phone calls.
The Morning Joe host also attacked trade-war aid payments to farmers, calling the system "the biggest Socialist farm payoff scheme ever."
"We're back here again, by the way, in rerun season here in the Judiciary Committee," GOP Congressman Doug Collins said on Sunday.
"It's lack of character among people on these committees. Just a lack of character," MSNBC host Joe Scarborough said.
'Morning Joe' host Joe Scarborough revealed his own weight of about 240 pounds as a point of comparison to Trump's weight.