You can buy credit default swaps in T-bills, so if the US defaulted you could make a nice return - if you think you can find a counterparty in the form of a lar

You can buy credit default swaps in T-bills, so if the US defaulted you could make a nice return - if you think you can find a counterparty in the form of a large insurance company or bank who would actually survive a US default, which seems unlikely. An article in the Economist (IIRC) made the comment that these CDS's had best be denominated in Kalashnikovs and cans of spam.