Stocks struggle after Moody's downgrades US credit rating
1. US lost its last AAA credit rating, now rated AA1 by Moody's. 2. Market reactions include rising long-term borrowing costs and falling stock prices. 3. Proposed tax and spending bill could add $5 trillion to US debt. 4. Moody's projects worsening fiscal performance and higher deficits over the next decade. 5. S&P 500 was down 0.4% amidst these concerns during early trading.