: They are backed by the "full faith and credit" of the U.S. government, making them one of the safest investments globally regarding default risk. How to Buy
: You can gain exposure by purchasing shares of funds that hold Treasuries, such as the iShares 7-10 Year Treasury Bond ETF (IEF) . Why People Buy Them Buying a Treasury Marketable Security - TreasuryDirect
You buy directly from the government at auction without a middleman.