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:
The U.S. State Department is launching a pilot program to pre-screen E-1/E-2 visa applicants at consular posts in Canada. Kentucky Consular Center officials will contact the E-1/E-2 applicant's U.S. employer to verify information about the application, including the legitimacy of the company and the investment. This prescreening aims to assist consular officers to focus on the individual applicant's qualifications. The State Department hopes to implement the pilot around the world at consular posts that process E visa applications.
What kind of problems can employment-based nonimmigrants (H-1, L-1, E-1, E-2, E-3, TN) face during reentry?
I think this question is most relevant for H-1 holders, but other employment-based nonimmigrants may also note the general principles here.