There are a lot of interesting investment options available for US residents (real estate loans, p2p lending, etc). My parents are Canadians who do have US SSN numbers from their past work in US. I'm in US so I can provide a mailing address. Anyone know if anyone of these companies work with non-residents?
I can't invest in these alternative investments since my marginal tax rate for interest income is over 50%, whereas they are retired and would only owe the 15% withholding tax.