Wall Street Frontline | U.S. Treasury bonds, once seen as safe-haven assets, are now facing unprecedented challenges. In late May, yields on 20-year and 30-year Treasuries surpassed the key 5.1% mark, triggering concerns about a long-term bond "sell-off." This reflects deep worries about U.S. fiscal deficits, debt levels, and interest burdens. Fitch Ratings has warned that even if deficits briefly improve in 2025, they will widen again due to tax cuts and slower growth. By 2026, U.S. debt is pro