[mgsk]

Yeah.

Sec. 3. Scope of Suspension and Limitation on Entry. (a) The suspension and limitation on entry pursuant to section 2 of this proclamation shall apply only to any alien who:

(i) is outside the United States on the effective date of this proclamation;

(ii) does not have a nonimmigrant visa that is valid on the effective date of this proclamation; and

(iii) does not have an official travel document other than a visa (such as a transportation letter, an appropriate boarding foil, or an advance parole document) that is valid on the effective date of this proclamation or issued on any date thereafter that permits him or her to travel to the United States and seek entry or admission.

[cylinder]

Yes this appears to be a loophole, wherein anyone in the US on June 24 who has a valid nonimmigrant visa (could be a tourist or student visa) is able to obtain a visa label in a banned category at a US Consulate.

That said whether DOS interprets it that way is another story.