Federal officials say former presidential candidate John Edwards must repay more than $2 million to the U.S. Treasury.
In a final report released Friday, the Federal Election Commission unanimously approved an internal audit that said Edwards' campaign understated its cash on hand and overstated its expenses.
Auditors also found that Edwards, a former senator from North Carolina, did not itemize more than $4 million in loan payments as part of his 2008 bid for the Democratic nomination. Audits are required for federal campaigns that accept public financing.
Edwards' campaign committee now has 90 days to make a payment to the Treasury or 60 days to ask the FEC to review its decision.
Separately, Edwards is facing federal charges that he accepted illegal campaign contributions to hide an affair.
