The Senate last week cleared a path for staff members to testify before a federal grand jury investigating criminal misconduct allegations against Sen. John Ensign (R-NV), the Las Vegas Review Journal reports.
"It was another sign that the Justice Department is moving along in its probe of Ensign's extramarital affair with his former political aide Cindy Hampton and allegations he violated lobbying law and other statutes in attempting to cover it up."
The Senate ethics committee is conducting a parallel investigation.