I have to disagree here, while t-bills have been a stable performing asset and there is tax benefits, US debt is so over leveraged that the bond market could collapse at any time. Add to the decreased international demand for US bonds due to BRICs and I would consider the risk to be too great. Especially with credit unions performing at a rate of 6.7% or higher in many areas, taking the tax haircut is worth it.
The AI bubble is also purely investor hype as well making a crash likely, JP Morgan also sent out a memo to their high-level clients telling them to expect a market crash within the next few months.
Considering this the only real plays are either to get into the asian markets (while living in Asia), or purchase insurance in the form of gold, silver, production equipment and real-estate. And a credit union backed money market, for liquid assets. Specifically chose credit unions because the bank collapses are still ongoing and it is likely we will see a financials sector crash when the AI bubble is popped.