America Grows Act of 2021 This bill permanently funds several agencies that perform agriculture research. The bill provides specified funding for the following agencies within the Department of Agriculture: the Agricultural Research Service, the Economic Research Service, the National Agricultural Statistics Service, and the National Institute of Food and Agriculture. The bill exempts the funding from sequestration, which is a process of automatic, usually across-the-board spending reductions under which budgetary resources are permanently cancelled to enforce specific budget policy goals. It also exempts the budgetary effects of the funding from the Statutory Pay-As-You-Go Act of 2010 (PAYGO) and the Senate PAYGO rule.