In a historic trip to Capitol Hill, Robert Mueller testified Wednesday that President Donald Trump was not "totally exonerated" by the special counsel's report on Russian election interference, as Trump has frequently claimed.

The former special counsel, who was answering questions about the probe for the first time since he took it over in May 2017, also testified that Trump could be prosecuted for potential crimes after he leaves office.

A Department of Justice legal opinion, which Mueller followed during his probe, states that a sitting president cannot be indicted.

Mueller was asked about the findings of his two-year investigation during a hearing before the House Judiciary Committee. He faces a second hearing before the House Intelligence Committee later Wednesday.

Judiciary Chairman Jerry Nadler, D-N.Y., asked Mueller if Trump was "correct" in his repeated claims that the report "found that there was no obstruction and that it completely and totally exonerated him."

"That is not what your report said, is it?" Nadler asked.

Mueller responded: "Correct. That is not what the report said."