"How many FBI agents or confidential informants actively participated in the events of Jan. 6?" Cruz asked.
Sanborn said in response that she could not discuss "the specifics of sources and methods" of the FBI.
Cruz then broadened his question by asking if any FBI agents or confidential informants actively participated in the riot.
"Sir, I can’t answer that," she said.
Cruz then asked if any agents or confidential informants committed crimes of violence on Jan. 6. When he received the same answer, he asked if any agents or confidential informants "actively encouraged" crimes of violence on Jan. 6.
"Sir, I can’t answer that."
Cruz then brought up Ray Epps, who was seen on video the day before the riot, telling a crowd, "Tomorrow, we need to get into the Capitol! Into the Capitol!" The crowd responded by shouting, "Fed! Fed! Fed!" at him.
Epps, later claimed that he was not encouraging wrongdoing.
"The only thing that meant is we would go in the doors like everyone else. It was totally, totally wrong the way they went in," he told the Arizona Republic.
"Miss Sanborn, was Ray Epps a fed?" Cruz asked.
"Sir, I cannot answer that question," Sanborn replied.