Former Secretary of State and Democratic presidential candidate Hillary ClintonHillary Diane Rodham ClintonYang expands campaign with senior hires for digital operations Top GOP legislator in California leaves party GOP senators request interview with former DNC contractor to probe possible Ukraine ties MORE weighed in on 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's tweet on Friday that criticized a witness in the impeachment inquiry, stating "witness intimidation is a crime."

"Witness intimidation is a crime, no matter who does it. Full stop," the former secretary of State tweeted. 

Clinton's tweet follows a post by Trump about testifying witness and former ambassador to Ukraine 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

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"Everywhere Marie Yovanovitch went turned bad," Trump tweeted Friday. "She started off in Somalia, how did that go? Then fast forward to Ukraine, where the new Ukrainian President spoke unfavorably about her in my second phone call with him. It is a U.S. President’s absolute right to appoint ambassadors."

Yovanovitch called the tweet "intimidating" after 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.) read it to her during the hearing. 

"It’s very intimidating,” Yovanovitch said. “I can’t speak to what the president is trying to do, but I think the effect is to be intimidating.”

Yovanovitch was removed from her post in Ukraine earlier this year. She testified as part of the House's impeachment inquiry into Trump on Friday.