Keep in mind that our trading partners can't eat U.S. dollars, so they have to do something with them that circulates the money back into the U.S. We're basically buying oil from the Middle East and cheap crap from China, and they're turning around and using the cash to buy U.S. Treasury bills that are paying ridiculously low interest rates.
The only reason we’re importing anything is due to overregulation and overtaxation for domestic production (the deal that FDR cut with the House of Saud notwithstanding, in regards to oil). We have not built a new refinery here since 1976, and all due to the “environmentalist” Gaia-worshipers on the left.
And the days of our enemies buying T-bills from us are coming to an end. That was part of the means to the end of making the USA collapse. If you don’t believe that, then look at how they are talking.