Moussavi is a member of Iran's Expediency Council, which mediates between the parliament and the non-elected Guardian Council led by Ayatollah Khamenei.
Some Republicans have called for the abolition of the Environmental Protection Agency and the National Labour Relations Board, which mediates employer-union relations.
Last month, the Financial Ombudsman Service, which mediates in cases where complaints cannot be resolved, said there had been a big increase in the number of complaints.