Rep. Sheila Jackson Lee (D-Texas) snapped at Acting Attorney General Matthew Whitaker during his testimony before Congress Friday, telling him that making light of the proceedings was "not acceptable."

Jackson Lee took Whitaker to task as she asked House Judiciary Committee Chairman Jerrold Nadler if she could have some of her five-minute questioning time restored after a disruption.

Whitaker, who earlier in the hearing called "time" on Nadler, interjected, "I don't know if your time's been restored or not."

Jackson Lee fired back at the perceived light-hearted comments, responding, "Mr. Attorney General, we're not joking here. And your humor is not acceptable."

She said that Congress has a duty and a right to ask him questions, and she told him that he needs to "behave appropriately," and she will do the same.

Jackson Lee went on to press Whitaker on if he had discussed Special Counsel Robert Mueller's investigation with President Trump or members of his administration.

Whitaker declined to get into the specifics of the ongoing investigation beyond his previous statement that he had no conversations with the president about the Mueller probe and he had not interfered in the investigation.

Watch the exchange above.

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