As lawmakers pressure the VA to replace the headstones, VA Secretary Wilkie said he'd prefer to install explanatory markers.
The VA says they are aware of the headstones but are required to preserve them, as they are considered historic artifacts.
The ban on public gatherings has transformed Memorial Day tributes to the nation's war dead.
The cemetery has turned to virtual events during the COVID-19 outbreak.
Eight WWII veterans -- the youngest of them age 96 -- will join President Donald Trump at a wreath-laying ceremony Friday.
The church is calling for volunteers to recite each name, civilian and military, of those who perished due to the fighting.
The senators urged Esper to add the 74 sailors who died aboard the USS Frank E. Evans to the Vietnam Veterans Memorial.
Arlington National Cemetery is tightening its security protocols and warning visitors to report suspicious activity.
Previously, only officers, warrant officers, senior NCOs and those killed in action received full honors.
The ship was sunk in the Dec. 7, 1941 attack on Pearl Harbor.