Fiji's National Federation Party says the new measure by the Immigration Department to accept only bank cheques in payment for its services is draconian and unlawful.
The NFP's reaction follows the decision by the director of immigration, Eroni Luveniyali, not to accept cash and other forms of payment to stop fraud and corruption among immigration staff.
But the Fiji Sun quotes the NFP's general secretary, Pramod Rae, as saying it is insane to claim that bank cheques will stop corruption.
Mr Rae says the Fiji dollar is the legal currency of the country and if the immigration director cannot stop corruption in his department he should resign.
He says Fiji citizens requiring the services of the immigration department should not be penalised.
Mr Rae says commercial banks charge a substantial fee for cheques and the new system will put an unnecessary burden on people.