US tariff turmoil leaves Treasury markets dazed

Core Insights - The Supreme Court's ruling against President Trump's tariffs has introduced new uncertainties into U.S. trade policy, debt markets, and the dollar, rather than providing relief [1] - The ruling leaves unresolved issues regarding potential refunds, which could create a financial gap of approximately $170 billion for the U.S. government [1] - Trump's replacement tariffs are lower and may alleviate short-term price pressures, but the overall impact on markets and the economy remains unpredictable [1] Treasury Market Implications - Yields on 10-year Treasuries increased slightly to 4.1%, down from peaks above 4.5%, amid signs of cooling inflation and expectations for Federal Reserve rate cuts [1] - The bond market is concerned about increased issuance due to potential refunds and ongoing stimulus bills, which could steepen the yield curve [1] - Analysts suggest that the fiscal deficit may not significantly worry the debt market, as substitutes for tariffs could be found and any additional funding might come from shorter Treasury bills [1] Revenue Uncertainty - The Congressional Budget Office had projected that Trump's tariffs would generate around $300 billion annually over the next decade, but the new 15% replacement tariff is temporary and its implementation details are unclear [1] - The market has not reacted significantly to the ruling, with some analysts believing that longer-lasting fallout can be avoided [1] - The dollar has continued to decline, losing about 0.4% against the euro, with a total drop nearing 12% since the beginning of Trump's second term in early 2025 [1]