A former Labour Minister intervened three times in the immigration bid of Donghua Liu including waiving the English language requirement for the millionaire businessman.
Damien O'Connor, in his role as the associate Immigration Minister, wrote three letters to Liu's advisor Warren Kyd - the former National Party MP - before deciding to grant residency against the advice of officials the day before the 2005 election.
The West Coast MP has said he cannot remember why he granted residency to the businessman whose links to both National and Labour have created political waves this year.
But letters released to the Herald under the Official Information Act show Mr O'Connor was being lobbied by Mr Kyd on behalf of Liu in the lead up to the tightly fought election.
The first, dated June 1 2005, stated Mr O'Connor would not intervene on Liu's behalf in regards to an "amended photograph" submitted as part of the immigration application.