From the Introduction: "'Child nutrition reauthorization' (CNR) refers to Congress's process of making changes to the permanent statutes that authorize the child nutrition programs, the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), and related activities:  the Richard B. Russell National School Lunch Act,  the Child Nutrition Act of 1966, and  (less often) Section 32 of the Act of August 24, 1935, which transfers funds to the child nutrition programs annually. The most recent CNR was the Healthy, Hunger-Free Kids Act of 2010 (P.L. 111-296). Some of the authorities created or extended in that law expired on September 30, 2015. However, the vast majority of program operations have continued with funding provided by appropriations acts."
CRS In Focus, IF10266
Congressional Research Service: https://crsreports.congress.gov/