"In the meantime, the never-ending Witch Hunt, led by 13 very Angry and Conflicted Democrats (& others) continues into the mid-terms!"
And on "Jimmy Kimmel Live!" on Monday night, the ABC host asked his viewers to "imagine how Donald Trump would have reacted if Obama said he had the right to pardon himself".
On Tuesday, the Senate's Republican leader, Mitch McConnell, also discouraged talk of a self-pardon by Trump.
As Mueller's investigation into alleged collusion between the Trump campaign and Russian Federation in 2016 fruitlessly drags on, Trump was not the only one to tout the President's power of pardon. "Well, Kim Jung Un got back on his hands and knees and begged for it, which is exactly the position you want to put him in".
On Sunday, Giuliani said on NBC's "Meet the Press" that it would be "unthinkable" for Trump to pardon himself - but that it was something the president could "probably" do - because it would nearly certainly lead to impeachment proceedings in Congress.
He added that it would be "political malpractice" for a president to pardon himself.
Giuliani's comments raised eyebrows, as did the assertion that the President had the power to pardon himself.
Kim Clijsters: Serena Williams can still win another Grand Slam
I gave up so much and gave everything on the court, all for this moment", Williams told a hastily-arranged news conference. Williams admitted she now faces a race against time in order to be fit for the grass court season and Wimbledon.
"The appointment of the Special Councel is totally UNCONSTITUTIONAL!" And "you don't let the president testify" because "that's been the danger of being interviewed" all along, Giuliani told Stephanopoulos.
He also played down the possibility that Trump could pardon himself, suggesting he might have that authority but would be unwise to use it.
Rudy Giuliani: "It's not going to happen, so it's a hypothetical point".
"He believes that, if he gets the chance to explain it, people will understand, no collusion with the Russians, no obstruction of justice", Giuliani said.
The former chairman of President Donald Trump's presidential campaign is facing accusations of trying to tamper with witnesses in his ongoing criminal cases.
Schumer says, "If he did nothing wrong, President Trump should welcome a thorough investigation to exonerate him".
Trump did not detail his grounds for claiming that the Mueller investigation is illegal. "Drug prices coming down & Right to Try!" tweeted the United States president.