Bank of America Chief Economist Aditya Bhave noted in his latest report that if the Federal Reserve raises interest rates by a cumulative 75 basis points this year as the market expects, annual interest expenses from Treasury Bills alone would increase by approximately $50 billion, equivalent to about 0.15% of U.S. GDP. The report also mentioned that total U.S. interest expenditures over the past 12 months have already reached a record high of $1.4 trillion and are projected to surpass Social Security spending within the next two years, becoming the federal government's largest single expenditure. The bank warned that a self-reinforcing feedback loop exists between interest expenses and the deficit, posing a severe challenge to U.S. fiscal sustainability.