The head of the Intelligence Committee said it would be seen as obstruction of justice.
The head of the House intelligence Committee, Adam Schiff, who heads the impeachment investigation into President Donald Trump, urged Secretary of state Mike Pompeo not to try to prevent diplomats from testifying before congressional committees.
“We are deeply concerned about Secretary Pompeo’s attempts to influence witnesses whose testimony our Committee needs. Many of them were mentioned in the whistleblower’s memo,” Pompeo said at a press conference.
The day before, Pompeo compared to “intimidation” attempts by lawmakers to obtain testimony from state Department employees.
“We want to make it clear that any effort by the Secretary of state, the President, or anyone else to affect the ability of Congress to call witnesses will be considered an obstruction of the legitimate functions of Congress,” Schiff added.
Charges of obstruction may serve as grounds for impeaching the President under the Constitution.