This is the latest information I got from my university in regards to getting a visa on time for the fall semester, but I am not sure if this applies to all US universities.
Can international students study fully online?A. Newly Admitted (no visa, in-home country): Yes, they may begin their program online with no restrictions.B. Current F/J (Visa Holders): We are currently waiting on guidance from SEVP (Student and Exchange Visitor Program) to declare whether they can take classes online. At the moment, we are unsure of when the guidance will be published.