A shopper navigates an isle at Northgate González Market on Tuesday, March 17, 2020, in Santa Ana, California. In light of coronavirus concerns, the Northgate market chain opened the store one hour early for seniors 65-years and older and disabled. (Chris Carlson | AP)

Nearly 30 members of Congress have sent a letter to the Department of Health and Human Services and U.S. Attorney General William Barr, urging them to issue guidance to state agencies to protect people with disabilities from being discriminated against during the outbreak.