NSC official plans to testify in impeachment probe even if White House tries to block him

Source: Politico

Tim Morrison, a National Security Council official who has been identified as a witness to one of the most explosive pieces of evidence unearthed by House impeachment investigators, plans to testify Thursday even if the White House attempts to block him.

“If subpoenaed, Mr. Morrison plans to appear for his deposition,” his attorney, Barbara Van Gelder, said.
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Morrison, however, would be the first currently serving White House official to testify. He’s also the first official believed to be on a July 25 phone call between President Donald Trump and Ukrainian President Volodymyr Zelensky during which Trump pressed his counterpart to investigate former vice president Joe Biden.

Read more: https://www.politico.com/news/2019/10/25/trump-impeachment-testimony-057257

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First hand witness to the phone call.

Next, may be suggest getting the other first hand witness on the phone call, Mr. tRump to testify as Bill Clinton was compelled to do?