The Senate inquiry, also searching for rich detail, intends to focus on two case histories.

He darkly recalled the 1991 Senate inquiry into his own ethical standards.

He was later subject to a Senate inquiry into his conduct while in this office.

And I think properly understood, that is a reasonable subject for Senate inquiry.

A review of the evidence in the early 2000s found that not a single case had been reported in the 30 years since the Senate inquiry.

Republicans had sought for months to block any widening of the Senate inquiry.

A six-month Senate inquiry has found no credible evidence to support this allegation.

The word ethics was also given a workout in the Senate inquiry.

He said "we will not use the hearing to serve as the first round" in a further Senate inquiry into the affair.

The Senate inquiry into the nomination uncovered troubling questions of judicial ethics.