House Intelligence Committee Chairman Adam Schiff Adam Bennett SchiffSchiff to subpoena top DHS official, alleges whistleblower deposition is being stonewalled Schiff claims DHS is blocking whistleblower's access to records before testimony GOP lawmakers distance themselves from Trump comments on transfer of power MORE (D-Calif.) on Sunday dismissed President Trump's call for the congressman to testify in the Senate's impeachment trial.

"What would I offer in terms of testimony? That I heard [former National Security Council senior director for Europe and Russia Fiona Hill] say such and such?" Schiff said on CNN's "State of the Union."

"The only reason for them to go through this is to mollify the president, and that’s not a good reason to call a member of Congress," Schiff added.

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However, Schiff did not go so far as to say he would refuse to testify if the Senate called him to do so.

"I don't want to comment on it," Schiff said on whether he would appear.

Schiff said if Republicans "go down this road" it would show a "fundamental lack of seriousness" and turn the impeachment trial into a "circus like the president would like."

Trump tweeted Saturday that Schiff "will be compelled to testify should the Democrats decide, despite the fact that my presidential conversations were totally appropriate (perfect), to go forward with the Impeachment Hoax."