NEW YORK — The 30-year U.S. Treasury yield surged to 5.23 percent in the past 24 hours, the highest level for the long bond in 19 years, as investors reassess the country's fiscal trajectory following a flurry of policy actions from Washington.

Global bond and currency investors are now debating the return of a 'Sell America' trade — a posture that treats U.S. assets not as a safe haven but as a liability.

Federal Reserve Chair Kevin Warsh said yields are higher today than they were 42 days prior, and that markets have reached this point because the central bank stepped back from trying to influence those rates. The bond market, in other words, is now dictating terms.

That dynamic is forcing Washington to confront its deficit in real time. Higher carrying costs on each dollar of U.S. debt make it harder for Congress to justify new spending programs, tax cuts or expanded defense expenditures. Bills with weak fiscal scores are now meeting market resistance before they reach a floor vote.

The U.S. dollar is under renewed pressure as investors reassess President Trump's policies and geopolitical risks. Washington's stated preference for a weaker currency adds to that pressure. In Japan, persistent anxiety over government intervention has weighed on the yen, creating a drag on the dollar in that cross. China's management of the yuan and its reserve accumulation further complicate the dollar's global position as Beijing works to reduce dependence on a dollar-dominated financial system.

U.S. equities reflected the tension: the S&P 500 fell 0.2 percent, the Nasdaq dropped 0.8 percent and the Dow Jones Industrial Average gained 0.5 percent. Duration risk on U.S. government debt is rising as yields hold at extended levels, and investors with long-dated positions are absorbing mark-to-market losses that are only widening with each basis point the long bond climbs.