The Senate blocked a GOP plan to shift SNAP costs to states, calling it unlawful. The move protects millions relying on food stamps amid fiscal policy debates.

The ruling by the parliamentarian sent G.O.P. lawmakers back to the drawing board to cover the costs of President Trump’s domestic policy bill.

One in every six Tri-Cities households receive SNAP benefits, according to USDA data. That’s nearly 17,000 Tri-Cities families that could be impacted by cuts to the food stamp program.