Frank McBrearty Jr has instructed his lawyers to take action against the state after he was refused entry to the United States for a family holiday.
Mr McBreaty claims he was turned away when US immigration officials checked the Garda Pulse computer system for any convictions.
He says an assault for which he was cleared showed up on the system despite assurances from senior gardaí that it had been removed.
Mr McBrearty says his family has been humiliated.
"Noel Conroy and Minister Michael McDowell are going to pay for the humiliation that my family have been put through today at Dublin Airport," Mr McBrearty said. "This is a case they won't be able to settle in the High Court, no matter how much money they offer. I'm an innocent man."