The travel bans necessitated by the COVID pandemic have created much flux and uncertainty. Synthesizing the information now finally available from various US government sources, it is clearer now that many intending travelers can seek and obtain an exemption from the ban under a series of provisions for a National Interest Exception (NIE).
You should be able to apply for an NIE to overcome the ban on travel to the USA if you meet any one or more of the following categories:
Update 1- Feb 8, 2021
Can students on OPT CPT work remotely during the COVID times. ICE says yes. See from page 12 on of this FAQ released by the govt.
https://www.ice.gov/doclib/coronavirus/covid19faq.pdf
A careful review of these appropriate conditions leads to the inescapable conclusion that very little has really changed.