If you are truly worried about your own currency collapsing you could just as easily use the forex or even just invest in a foreign stock exchange. (getrichslowly.org)
Not without saying it, even though investing in foreign stocks can help diversify your portfolio, it also poses additional risks. (myfinancekits.com)
Mutual funds that invest in foreign stocks pay taxes to the appropriate country on dividends generated by those investments. (putnam.com)