Helms, who many lawmakers contend has a personal grudge against the Illinois Democrat, had suggested that Moseley-Braun should "look for another line of work."
Moseley-Braun had been the nation's first black female senator, representing Illinois, until her defeat in 1998.
Congressional Democrats and civil rights organizations had accused Helms of trying to block the nomination to settle an old score - a 1993 clash between the two on the Senate floor over use of the Confederate flag.
Helms had said Moseley-Braun was under an "ethical cloud." He allowed hearings on her nomination by his Committee only after the White House complied with Helms' demand for documents from the Justice Department and Internal Revenue Service on Moseley-Braun's background investigation.
Helms, R-N.C., had declined to schedule the hearing until the administration went along with his demand for what he termed "essential" documents.
Among the issues were allegations that Moseley-Braun used leftover 1992 campaign funds for personal luxuries.