This is really not easy to check, because the interest rate in the United States is completely market-oriented. You can only compare the interest rates announced by the Federal Reserve or other official financial institutions, such as the federal benchmark interest rate. These things should be available on the Fed website, and the paper version of The Wall Street Journal should be published daily. The online version does not know and will not.

There are many people doing the operation you mentioned below, but the difficulty is that money can't circulate freely. In fact, underground money houses are rampant in China, and a large part of them are doing this kind of circulation business. In fact, if you think about it from another angle, from the perspective of American capitalists, not to mention lending the money from the bank. The Federal Reserve itself is constantly printing money at zero interest rate. Hehe, of course, money will flow to places with high yields. This is what we often call hot money.