Detroit's Big Three automakers and the United Auto Workers (UAW) union said on Tuesday that they will reinstate the wearing of masks at all U.S. plants, offices and warehouses, regardless of vaccination status, beginning on Wednesday. General Motors Co, Ford Motor Co and Stellantis NV said in a joint statement with the union the move is in response to the Center for Disease Control and Prevention’s (CDC) change in COVID-19 guidance for masks for fully vaccinated people related to the Delta variant. The CDC said last week fully vaccinated people should wear masks indoors in public spaces in places with substantial or high COVID-19 community transmission rates.

Federal prosecutors are seeking to retry a former University of Tennessee researcher accused of hiding his relationship with a Chinese university while receiving research grants from the federal government. Assistant U.S. Attorney Casey Arrowood filed a one-page notice in U.S. District Court in the case against Anming Hu, the Knoxville News Sentinel reported on Tuesday. Hu was an associate professor in the university’s Department of Mechanical, Aerospace and Biomedical Engineering when he was charged in February 2020 with three counts of wire fraud and three counts of making false statements.