On the same day that Senate Budget Committee Republicans revealed that spending on federal welfare programs constituted the single largest expenditure in the 2011 budget, the Department of Agriculture failed to meet a key deadline to further explain its food stamp partnership with the Mexican government....(SNAP), or food stamps, which recently reached an all-time high enrollment of nearly 47 million participants. Non-citizen participation in SNAP has quadrupled since 2001 and doubled since 2008.