"Because he was giving away—he was compromising the sovereignty of our elections for personal benefit," Meacham said.
"Don't complain that the evidence isn't direct enough when you are blocking what would obviously be more direct evidence," Congressman Mike Quigley said.
In a Fox & Friends appearance, Judge Andrew Napolitano told hosts that "the law is not on the president's side."
Republican Representative Brad Wenstrup's Obama theory was debunked by House Intelligence Committee Chairman Adam Schiff, who noted Russia invaded Ukraine two years after Obama's comment at question.
"I think very nonpolitical," Chris Wallace said. "The only thing he talked about was a strong feeling that it was in the U.S. national security interests to support Ukraine in the fight against Russia."
"There was no quid, and there was no quo," Washington Times editor Charles Hurt told Fox & Friends' Steve Doocy. "When there's no quid or pro, you can't keep saying 'quid pro quo,' even though I don't even know what that means, really."
"We don't know. Senators are very sensitive to the will of the people and if the people in this country turn on these facts and this president, I think the Senate might as well," Carl Bernstein said in an interview with CNN Tuesday.
The first of the open sessions with witnesses to the Trump impeachment inquiry, who will give evidence to the House Intelligence Committee, are taking place.
Ex-Navy intelligence officer Malcom Nance's comments seemed to be well-received by 'Morning Joe' co-host Willie Geist.
"He said, she said, he said, he thinks, I interpreted—CIA does not stand for conjecture, interpretation and assumptions," Trump's senior counselor argued.
"It's the selective release, that the courts will say, 'is he really serious about executive privilege?'" Andrew Napolitano pointed out.
"Let them hear the testimony, that's fine," Haley said, referring to the public hearings on impeachment that are set to start this week.
"We have a situation where we see the national security of the United States ... compromised over the president's political interests," Steve Schmidt said.
Testimony from key officials has thus far been damning for President Donald Trump and his aides who ran the White House's parallel Ukraine policy.
Molly Montgomery said the current State Department is "far from having swagger" and is instead "limping along at the moment."
Republicans "are going to try and discredit the witnesses. But as Sam Stein said, they are unimpeachable witnesses," Susan Del Percio said
"If it's corrupt and he believes there to be corruption, he has every right to withhold aid," the Republican senator said.
Former National Security Adviser John Bolton became the latest ex-Trump administration official to sign a book deal this week.
The president's son sat down as a guest, only to be attacked by the hosts' intolerance and fear of the facts.
Intruders entered a broadcast of Ukrainian channel Pryamiy to the sound of apparent gunfire.
"I think it's really regrettable that now the president and his supporters and others are advocating his [or her] unmasking," the former Director of National Intelligence James Clapper told CNN.
John Avlon said that Graham has now essentially suggested that Trump is too "incompetent" and could not actually formulate a quid pro quo.
Conway commented on Giuliani hiring lawyers to represent him on a mounting investigation into his contact with two men facing campaign finance violation charges, who connected him to Ukrainian officials.
"Three years ago, they were shouting about law and order over Hillary Clinton's emails," Andrew Napolitano wrote. "Today, they are shouting to let Trump be Trump."
"I just wonder how low these people are going to go. How much they're going to degrade themselves?" MSNBC's Joe Scarborough asked.
"They're all diplomats, and diplomats are notorious gossipers," Gregg Jarrett argued.
"You want the president impeached and you don't have the goods," Conway told NBC News' Peter Alexander after the two had a lengthy exchange about the witnesses.
"Everything is at stake," James Melville warned, "regarding our reputation, our effectiveness, our power, our influence, what we can get done in the world."
Graham said Tuesday that evidence against Trump from Gordon Sondland's testimony was a "bunch of BS."