i have a slightly tarnished record in u.k...so i would not be allowed into australia-america......but i also have an irish passport...i have never lived in south ireland so im squeeky clean there.. im dual citizenship...could i travel to either country on the irish passport?
If you read in the travel section about getting into the US even with a record, you will see it is still possible - search US Visa. You will probably find posts in the law section too
As for Oz? Don't really know but would imagine, like the US, Australia has no access to our criminal records unless you were a terrorist or something equally nasty
Yes, you can use either passport
Australia only checks immigrants for criminal records when they apply for a visa - and it has to be fairly serious for them to worry. They do not check tourists
Unless you have done something seriously naughty (gaol time) fairly recently, you should have little trouble visiting Australia. If you try to hide the fact that you have any type of criminal conviction however, things will be difficult. Dual citizenship is no protection from the checks that are done when you apply for your visa. Every foreign citizen must apply for a visa, whatever their reason for travel.