An inflation surge is presenting a fresh challenge for Mr. Biden, who for months insisted that rising prices were a temporary hangover from the pandemic recession and would quickly recede. Instead, the president and his aides are now bracing for high inflation to persist into next year, with Americans continuing to see faster — and sustained — increases in prices for food, gasoline and other consumer goods than at any point this century.

That reality has complicated Mr. Biden’s push for sweeping legislation to boost workers, expand access to education and fight poverty and climate change. And it is dragging on the president’s approval ratings, which could threaten Democrats’ already tenuous hold on Congress in the 2022 midterm elections.

Recent polls shows Americans’ concerns over inflation are eroding their economic confidence and dimming their view of Mr. Biden’s performance. National surveys by CNBC and Fox News show a sharp decline in voter ratings of Mr. Biden’s overall performance and his handling of the economy, even though unemployment has fallen quickly on his watch and economic output has strengthened to its fastest rate since Ronald Reagan was president. Voter worry over price increases has jumped in the last month.