The hotel chain owners and National Party donors who won a government contract to manage a luxury resort in Niue say they would welcome any investigation by the Auditor-General.
The Labour Party has been calling for an inquiry into the process.
One month before Scenic Hotel announced it had won the contract for the Matavai Resort, Mr Hagaman - its founder and executive chairman - donated $101,000 to National.
Foreign Affairs Minister Murray McCully said there was no link between the two events, but Labour leader Andrew Little has asked the Auditor-General to investigate the awarding of the resort management contract.
Earl and Lani Hagaman said they would support any inquiry into what they said was a contestable process.
The couple accused Mr Little of a political beat-up, saying he was trying to score points at their expense.
They said they were not interested in being a political football, and were considering other legal options to counter what they said were unfounded accusations.