The Safer Federal Workforce Task Force is led by the White House COVID-19 Response Team, the General Services Administration (GSA), and the Office of Personnel Management (OPM). The President created the task force to give the heads of federal agencies ongoing guidance to keep their employees safe and their agencies operating during the COVID-19 pandemic. The task force provides frequent updates, which include an FAQ page. On June 24, 2021 the task force issued an update on government related travel, you can find it here:
WhiteHouse.gov 
FEB.gov 
Data.gov 
USASpending.gov 
USA.gov 
OPM.gov