One document conceeds "Surely this [laws mandating checks of people's ID cards] will be opposed by employers on the basis that it is not their duty to control entry into Australia" http://recordsearch.naa.gov.au/NAAMedia/ShowImage.asp?B=3142...
The project was eventually scrapped due to privacy concerns and swung so far that there are now laws preventing certain government agencies (Taxation/Immigration/Welfare/Health Insurance etc.) from doing JOIN on each others databases unless it's overseen by a third party http://www.oaic.gov.au/privacy/privacy-act/government-data-m... http://www.oaic.gov.au/privacy/privacy-act/medicare-and-phar...