The beleaguered grocery sector faces a new threat: the possible loss of tens of billions of dollars of spending by low-income shoppers.

The Trump administration is pushing to rein in spending for the food-stamp program by nearly $130 billion over a decade, representing a 20% reduction of its current annual budget of $63 billion. The move could constitute one of the biggest yearly reductions in program-sponsored purchases for retailers since the recession.

This and other proposals from Republicans intend to overhaul the nation’s food-stamp program as lawmakers begin renegotiating the Farm Bill, a sprawling $900 billion piece of legislation that allots about 80% of its funding to nutrition assistance and is set to expire at the end of September.

Some participants may no longer receive food stamps if lawmakers approve stricter work requirements included in proposals by Republicans on the House Agriculture Committee.

House Republicans say their plan is aimed at creating opportunities for low-income Americans to acquire the skills needed to take part more fully in the growing U.S. economy. They foresee people leaving the program as incomes rise, with its lower costs reflecting beneficiaries’ improved economic status.