According to the proclamation published on May 29, 2020:

Section 1. Suspension and Limitation on Entry. The entry into the United States as a nonimmigrant of any national of the People’s Republic of China (PRC) seeking to enter the United States pursuant to an F or J visa to study or conduct research in the United States, except for a student seeking to pursue undergraduate study, and who either receives funding from or who currently is employed by, studies at, or conducts research at or on behalf of, or has been employed by, studied at, or conducted research at or on behalf of, an entity in the PRC that implements or supports the PRC’s “military-civil fusion strategy” is hereby suspended and limited subject to section 2 of this proclamation. 

For the purposes of this proclamation, the term “military-civil fusion strategy” means actions by or at the behest of the PRC to acquire and divert foreign technologies, specifically critical and emerging technologies, to incorporate into and advance the PRC’s military capabilities.

Section 2.  Scope of Suspension and Limitation on Entry. (a)  Section 1 of this proclamation shall not apply to:

(i)    any lawful permanent resident of the United States;

(ii)   any alien who is the spouse of a United States citizen or lawful permanent resident;

(iii)  any alien who is a member of the United States Armed Forces and any alien who is a spouse or child of a member of the United States Armed Forces;

(iv)   any alien whose travel falls within the scope of section 11 of the United Nations Headquarters Agreement or who would otherwise be allowed entry into the United States pursuant to United States obligations under applicable international agreements;

(v)    any alien who is studying or conducting research in a field involving information that would not contribute to the PRC’s military‑civil fusion strategy, as determined by the Secretary of State and the Secretary of Homeland Security, in consultation with the appropriate executive departments and agencies (agencies);

(vi)   any alien whose entry would further important United States law enforcement objectives, as determined by the Secretary of State, the Secretary of Homeland Security, or their respective designees, based on a recommendation of the Attorney General or his designee; or

(vii)  any alien whose entry would be in the national interest, as determined by the Secretary of State, the Secretary of Homeland Security, or their respective designees.

(b)  Nothing in this proclamation shall be construed to limit the ability of an individual to seek asylum, refugee status, withholding of removal, or protection under the Convention Against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment, consistent with the laws of the United States.

Section 4.  Termination.  This proclamation shall remain in effect until terminated by the President.  The Secretary of State, in consultation with the Secretary of Homeland Security, may at any time recommend that the President continue, modify, or terminate this proclamation.

Section 5.  Effective Date.  This proclamation is effective at 12:00 p.m. eastern daylight time on June 1, 2020.

Resource: The White House