Pelosi invites Trump to testify as new witnesses prepare

House Speaker Nancy Pelosi of Calif., left, and Senate Mirity Leer Sen. Chuck Schumer of N.Y., right, listen as y wait to speak at an event on Capitol Hill in Washington, Tuesday, v. 12, 2019, regarding earlier oral arguments before Supreme Court in case of President Trump's decision to end Obama-era, Deferred Action for Childhood Arrivals (DACA), program. 

Impeachment hearings are entering a crucial second week as Democrats are set to hear from eight witnesses about President Donald Trump’s dealings with Ukraine.

Three State Department officials have alrey testified about ir concerns as Trump pushed Ukraine to investigate Democrats and withheld military aid.

In an interview aired on CBS’ “Face Nation,” House Speaker Nancy Pelosi said Trump would be welcome to appear before investigators or answer questions in writing. Trump has said impeachment process is stacked against him and is thing more than a “witch hunt.”

week’s most anticipated witness may be Ambassor Gordon Sondland, set to appear Wednesday. Sondland spoke multiple times to Trump about Ukraine policy. Or witnesses have said two discussed efforts to push for investigations of Democrats.