evidence: Americans are finally getting a break from inflation, with prices for gasoline, used cars and health insurance all falling over the past year, relieving families and buoying President Biden’s 2024 reelection bid. But prices painfully remain high for one particularly frequent purchase: groceries. Stubbornly high grocery prices represent a critical drain on the finances of tens of millions of people and remain, along with housing, perhaps the most persistent economic challenge for the Biden administration as it tries to convince Americans the economy is back on solid footing. For all the attention on gas prices and housing, more than two-thirds of voters say inflation has hit them hardest through higher food prices, according to a November 2023 survey by Yahoo Finance/Ipsos. That’s more than 50 percentage points higher than any other category. [...] Low-income families have been hit hardest by rising grocery prices, and they spend 31 percent of their income on food, compared with 8 percent for wealthier ones. Food insecurity is rising and food banks around the country report significant increases in demand in the past year, particularly after the expiration of extra pandemic food stamps last February. (Still, the Biden administration has also approved the largest-ever expansion in the food stamps program, resulting in an extra $36 per recipient per month at the time.)