More news about the impact of Covid-19 on immigration: https://www.jackson-hertogs.com/employer-resources/covid-19-immigration-impacts/
Effective March 16th at 1159pm EST, the suspension of entry described in our earlier news post at https://www.jackson-hertogs.com/travel-restrictions-expanded-to-europes-schengen-area-due-to-spread-of-novel-coronavirus/ has been extended to the UK and the Republic of Ireland.
In addition, ESTA visa waiver registrations have been cancelled (see: https://esta.cbp.dhs.gov/) and new ESTA applications will need to be submitted for future travel once entries are no longer suspended, or if the traveler is exempt (eg, US citizen or permanent resident spouse/child/sibling).