Federal lawmakers are considering bills to reintroduce whole and 2% milk in school meals, a move that could reverse a decade-old policy aimed at reducing childhood obesity.

Federal lawmakers have revived bills that would allow whole and 2% milk to be served again in schools, in addition to the skim and low-fat milk mandated since 2012. A U.S. Senate committee hosted a hearing Tuesday on a bill that has bipartisan support.

In a revival of a nutritional debate, lawmakers and health experts are reconsidering the question of whether whole and 2% milk belongs in school cafeterias. Those types were yanked in 2012 as part of an effort to combat childhood obesity by slashing the amount of saturated fat and calories kids consumed.