George ConwayGeorge Thomas ConwayGeorge Conway calls out Melania Trump after she criticizes impeachment witness: 'You're amplifying what was a nothingburger reference' George Conway quote-tweets Kellyanne Conway on Trump, Biden, Ukraine George Conway argues impeachment effort doesn't need a 'smoking gun' MORE and former United Nations Ambassador Nikki HaleyNimrata (Nikki) HaleyHaley: Dylann Roof 'hijacked' Confederate flag Trump: Kellyanne Conway 'must have done some bad things' to 'crazy' husband Trump says Pence will remain on 2020 ticket: 'He's our man 100 percent' MORE got into a heated back-and-forth on Twitter on Monday after she knocked the conservative lawyer and husband of White House counselor Kellyanne ConwayKellyanne Elizabeth ConwayOvernight Health Care: House to vote next week on drug prices bill | Conway says Trump trying to find 'balance' on youth vaping | US spent trillion on hospitals in 2018 White House adopts confident tone after Pelosi signals go on impeachment Conway: Trump trying to find 'balance' on youth vaping issue MORE for his recent criticism of a Republican lawmaker amid the House's impeachment inquiry.

“This is absolutely uncalled for and disgusting. What is wrong with people? George Conway is the last person that can call someone 'trash,'" Haley tweeted on Monday afternoon. Her tweet also featured an article published by Townhall, titled “George Conway: Let's Face It, This Elise StefanikElise Marie StefanikLawmakers introduce bipartisan bill to allow new parents to advance tax credits CNN's Bianna Golodryga: 'Rumblings' from Democrats on censuring Trump instead of impeachment Adam Schiff's star rises with impeachment hearings MORE Character Is 'Trash.’”

The post by the conservative website was centered around a tweet shared Friday by Conway that blasted the New York congresswoman as “lying trash” and urged his followers “give to her opponent.”

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During Friday's public impeachment hearing, Stefanik was shut down by House Intelligence Committee Chairman Adam SchiffAdam Bennett SchiffTrump denies report that he still uses personal cell phone for calls Schiff asks Pence to declassify more material from official's testimony Schiff: Impeachment testimony shows Trump 'doesn't give a shit' about what's good for the country MORE (D-Calif.) for trying to speak out of turn in conflict with the rules set for the proceedings. Stefanik and other Republicans later claimed that Schiff wasn't allowing them to participate.

In response to Haley, Conway, a vocal critic of President TrumpDonald John TrumpTrump says he will 'temporarily hold off' on declaring Mexican drug cartels as terror organization House Judiciary Committee formally receives impeachment report Artist behind gold toilet offered to Trump sells banana duct-taped to a wall for 0,000 MORE, took aim at the recent comments she made in defense of the president in an interview last Tuesday, in which she said Trump was “truthful” in “every instance” she worked with him. 

“You’ll say anything to get the vice-presidential nomination, won’t you, @NikkiHaley?” he said in a follow-up tweet. He also took a shot at the ratio of comments Haley received on her tweet criticizing him in comparison to its likes and retweets, writing in another tweet: “Nice ratio here.”

The heated exchange by Haley and Conway comes several days after the lawyer went after Donald Trump Jr.Donald (Don) John TrumpWhite House calls Democratic witness's mentioning of president's youngest son 'classless' Lawmakers to watch during Wednesday's impeachment hearing Top Democrats knock Trump on World AIDS Day MORE on Twitter during Marie YovanovitchMarie YovanovitchWashington state Democrat announces retirement The Hill's Morning Report - Dem impeachment report highlights phone records Phone records detail extent of Giuliani, White House contacts MORE's hearing on Friday.

Trump Jr. wrote in a tweet that “America hired” his father “to fire people like the first three witnesses” seen in the House’s first week of public impeachment hearings as part of its ongoing inquiry into Trump, referring to diplomats William Taylor and George Kent and Yovanovitch, the former U.S. ambassador to Ukraine.

Conway sounded off on Trump Jr.’s criticism, writing: “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."