in such amounts and at such times as may become necessary to carry out program operations: Provided , That funds provided herein shall be expended in accordance with section 16 of the Food and Nutrition Act of 2008: Provided further , That of the funds made available under this heading, $998,000 may be used to provide nutrition education services to State agencies and Federally Recognized Tribes participating in the Food Distribution Program on Indian Reservations: Provided further , That this appropriation shall be subject to any work registration or workfare requirements as may be required by law: Provided further , That funds made available for Employment and Training under this heading shall remain available through September 30, 2020: Provided further , That funds made available under this heading for section 28(d)(1), section 4(b), and section 27(a) of the Food and Nutrition Act of 2008 shall remain available through September 30, 2020: Provided further , That none of the funds made available under this heading may be obligated or expended in contravention of section 213A of the Immigration and Nationality Act ( 8 U.S.C. 1183A ): Provided further , That funds made available under this heading may be used to enter into contracts and employ staff to conduct studies, evaluations, or to conduct activities related to program integrity provided that such activities are authorized by the Food and Nutrition Act of 2008. Commodity assistance program For necessary expenses to carry out disaster assistance and the Commodity Supplemental Food Program as authorized by section 4(a) of the Agriculture and Consumer Protection Act of 1973 ( 7 U.S.C. 612c note)