WASHINGTON —  A one-time Clinton donor and Hollywood entrepreneur has filed a complaint with the Federal Election Commission asking it to reopen an investigation into a 2000 fundraiser that he helped organize for Hillary Rodham Clinton's Senate campaign.

The donor, Peter Paul, contends that Clinton's Senate campaign violated the law by not properly reporting nearly $2 million that he says he spent to arrange the event in Brentwood, Calif.

Campaign reports filed with the FEC estimated the cost of the event at about $500,000. Clinton's former national finance director, David Rosen, was acquitted of charges that he lied to the FEC about the fundraiser. At the time, Rosen's lawyer said Paul concealed the actual cost of the event from Rosen, a claim Paul denies.

The event was sponsored by a joint fundraising committee, New York Senate 2000. Its participants included Clinton's Senate campaign, the Democratic Senatorial Campaign Committee and the New York State Democratic Committee.

In 2005, the FEC ordered the joint fundraising committee to pay a $35,000 fine for failing to report more than $700,000 in expenses for the event, which featured such stars as Brad Pitt, Diana Ross and Cher. The FEC did not accuse Clinton of any wrongdoing.

The Clinton campaign did not immediately respond to the new filing. An FEC spokesman declined to comment.

Paul, a former partner of Spider-Man creator Stan Lee and a convicted felon, maintains he organized the event because President Clinton falsely agreed to assist him in a new venture. After news accounts revealed Paul's criminal past, the Clintons said they would no longer accept his contributions.

Paul, who pleaded guilty to cocaine possession and to trying to defraud the government of Cuba, maintains Hillary Clinton knew details of the event, and he has mounted a largely unsuccessful legal effort to lay blame on the Clintons.

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