WATCH LIVE: Day 1 of Trump Impeachment Hearings

Deputy Assistant Secretary for European and Eurasian Affairs George P. Kent (L) and top U.S. diplomat in Ukraine William B. Taylor Jr. are sworn in before testifying before the House Intelligence Committee in the Longworth House Office Building on Capitol Hill November 13, 2019 in Washington, DC. In the first public impeachment hearings in more than two decades, House Democrats are trying to build a case that President Donald Trump committed extortion, bribery or coercion by trying to enlist Ukraine to investigate his political rival in exchange for military aide and a White House meeting that Ukraine President Volodymyr Zelensky sought with Trump. (Photo: Chip Somodevilla/Getty Images)

WATCH LIVE: Day 1 of Trump Impeachment Hearings

One Democratic member of the committee said the public testimony will serve to put "a human face on" on what key witnesses have already said behind closed doors.

The public portion of the official impeachment inquiry by the U.S. House of Representatives into President Donald Trump begins Wednesday, with televised hearings by the House Intelligence Committe scheduled to start at 10:00am ET.

The two witnesses set to testify--both of whom have already given sworn depositions in closed-door sessions with lawmakers--are Ambassador William B. Taylor, Charge d'Affaires of the U.S. Embassy in Ukraine, and George Kent, Deputy Assistant Secretary of State for European and Eurasian Affairs. The second day of public hearings with take place Friday.

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While Republicans circulated talking points ahead of the hearings detailing their messaging strategy to defend Trump and call the Democratic-controlled hearings into dispute, HuffPost's Washington bureau chief Amanda Terkelcautioned against making the issue at the center of the hearings any more complicated than it is.

"In reality," explained Terkel, "it all remains very simple -- as simple as when the whistleblower complaint first came out. Making the entire scandal seem messy and complicated is exactly what Trump and his allies are aiming to do in advance of this week's first House hearings in the impeachment investigation."

It seem "like it's getting more complicated," she noted, "but it really isn't."

Ahead of Wednesday's hearing, Rep. Mike Quigley (D-Ill.), a member of the committee, said that most of what the American people "need to know is already in the public domain."

Cited the vast amount of already available evidence regarding President Trump efforts to use the power of his office in an attempt to get the Ukraine government to dig up dirt on former Vice President Joe Biden, among his top political rivals in next year's elections, Quigley said the public testimony will serve to put "a human face on" on what the witnesses have already said behind closed doors.

"There's a reason that you don't just hand out transcripts at a jury trial. Watch these people," said Quigley. "This is the cream of our diplomatic corps. They're speaking truth to power at great risk."

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