You may be interested in my response to this comment left in the Permanent Portfolio Discussion Forum:
"Perth is good, but I trust Australia less than Uncle Sam. ... If I put my assets in Australia, I not only need to worry about Australia's government seizing my assets in times of their need... but I also have to worry about the US State Departments ability to basically extradite the assets back (and me personally) to the United States under the guise of fraudulent transfer or tax evasion when Uncle Sam is in need."
It in I discuss the one occurance we have had of a request by US authorities for a client's gold to be handed over to a US court.
Unrelated - this is my new favourite blog Paper Money Shield who's mission is "Defending paper money from the rigorous attacks of precious metal advocates."