Conservative commentator George Conway George Thomas ConwayGeorge and Kellyanne Conway honor Ginsburg Lincoln Project releases new ad blasting Trump as 'a horrible role model' George Conway hits Trump on 9/11 anniversary: 'The greatest threat to the safety and security of Americans' MORE and Donald Trump Jr. Don John Trump'Tiger King' star Joe Exotic requests pardon from Trump: 'Be my hero please' Zaid Jilani discusses Trump's move to cancel racial sensitivity training at federal agencies Trump International Hotel in Vancouver closes permanently MORE squared off via Twitter during Marie Yovanovitch Marie YovanovitchGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Strzok: Trump behaving like an authoritarian Powell backs Biden at convention as Democrats rip Trump on security MORE's public impeachment hearing Friday.

Trump Jr., son of President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE, was unimpressed with the witnesses, tweeting: "America hired @realDonaldTrump to fire people like the first three witnesses we’ve seen. Career government bureaucrats and nothing more."

America hired @realDonaldTrump to fire people like the first three witnesses we’ve seen. Career government bureaucrats and nothing more. — Donald Trump Jr. (@DonaldJTrumpJr) November 15, 2019

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Conway, husband of White House advisor Kellyanne Conway Kellyanne Elizabeth ConwaySpecial counsel investigating DeVos for potential Hatch Act violation: report George and Kellyanne Conway honor Ginsburg Trump carries on with rally, unaware of Ginsburg's death MORE and vocal critic of Trump, replied to Trump Jr., tweeting: "Each of Taylor, Kent, and Yovanovitch has more intelligence, talent, integrity, decency, honor, and patriotism in each of their fingers than you and your father will ever have."

Trump Jr. shot back: "A guy who routinely & publicly embarrasses his wife by attacking her boss for the purpose of getting retweets and building his own brand is giving lectures on honor, integrity & decency. I'm sure your family really appreciates it, George. You're a disgrace."

A guy who routinely & publicly embarrasses his wife by attacking her boss for the purpose of getting retweets and building his own brand is giving lectures on honor, integrity & decency.



I'm sure your family really appreciates it, George. You're a disgrace. https://t.co/KRMMlxKyVh — Donald Trump Jr. (@DonaldJTrumpJr) November 15, 2019

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Diplomats William Taylor and George Kent testified Wednesday and Yovanovitch, the former U.S. ambassador to Ukraine, testified Friday.

The public hearings are the next phase in House Democrats' impeachment inquiry.

More hearings are scheduled for next week.