Cox is also a Democrat and he too voted for McGovern last November.
Several conservative analysts accused the Special Prosecutor's Office of a Kennedy-Harvard orientation and an anti-Nixon bias, but Vorenberg said that no one in the Nixon administration ever charged him with this.
In remembering his work for the Johnson administration, Vorenberg said that he found a marked difference between the Johnson and Nixon Justice Departments.
"People with limited competence as lawyers and less respect for law as an instrument of justice rather than as an instrument of politics were brought into the [Justice] Department by [former Attorney General John] Mitchell," Vorenberg said.
Mitchell has been indicted for illegal campaign fund-raising activities.
Commenting on the White House tapes case, Vorenberg said that "Cox has much the better of the argument." He said he did not want to speculate on the case's outcome while it is still pending.
Vorenberg did not say anything substantative about the investigation's progress, explaining that to do so would violate grand jury secrecy.