An easy way into the US credit card system and to build up credit is to apply for a US Amex through Global Transfer (assuming you have an Australian Amex for more than a few months).But as I have zero financial activity in the US, at least the last 20 years, the plan is get a debt card, stuff it full of money(5K or so) and wait 3 months or so for them to tell you to get this credit card offer. If I go for a CC with a fresh address and ho history, it will cause a black mark I think