The partial government shutdown has glided into its third week with no end in sight. If the government is not reopened before March, millions of Americans who receive benefits from the Supplemental Nutrition Assistance Program (SNAP) — the nation's food stamp program — could have their assistance disrupted. The funding provided for SNAP and other programs through February is only a temporary fix.

The U.S. Department of Agriculture, which oversees SNAP at the federal level, is one of the agencies unfunded during the partial government shutdown. USDA Secretary Sonny Perdue announced Tuesday that SNAP would be funded through February, thanks to the funding bill that expired on Dec. 22, which included a provision allowing federal agencies to make obligated payments to support certain programs for 30 days after its expiration date.

In September 2018, the last month for which data is available, $4.7 billion in SNAP benefits were disbursed throughout every state. If the shutdown continues through March, there will be no remaining funding for SNAP, endangering food security for millions of Americans.

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According to the nonpartisan Center on Budget and Policy Priorities, 42 million Americans received SNAP benefits in 2017. More than 68 percent of participants were in families with children, and more than 44 percent were in working families.

Other programs were in even more immediate danger than SNAP. The Food Distribution Program on Indian Reservations and the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) were not receiving federal funds at all during the shutdown, but "can continue to operate at the State and local level with any funding and commodity resources that remain available," according to the USDA in December.

However, the USDA announced Tuesday that WIC would continue to operate through February, thanks to "prior year funding which USDA will begin to provide states this week."

In the first five months of 2018, around 7 million Americans received WIC benefits each month. WIC is provided for pregnant, postpartum and breastfeeding women, infants, and children up to age 5 who fall within the poverty index and are at "nutritional risk." The WIC program granted nearly $5 billion to every U.S. state and territory in 2018, as of September.

Americans who benefit from both SNAP and WIC would be particularly affected if the shutdown continues past February.

Child Nutrition Programs, including School Lunch, School Breakfast, Child and Adult Care Feeding, Summer Food Service and Special Milk will continue operations through February, according to the USDA.

Staffing for Food and Nutrition Services, which oversees the Child Nutrition Programs, SNAP, and WIC, has been cut by 95 percent since the shutdown began.