USCIS and the Department of Homeland Security (DHS), in consultation with the Department of State, have published the list of countries whose nationals are eligible to receive H-2A and H‑2B visas in 2018. The notice listing the eligible countries was published on Jan. 18, 2018, in the Federal Register.
For 2018, Secretary of Homeland Security Nielsen and Secretary of State Tillerson have agreed:
To add Mongolia to the list of countries eligible to participate in the H-2A and H-2B visa programs, and
To no longer designate Belize, Haiti, and Samoa as eligible countries because they are not meeting the standards for the H-2A and H-2B visa programs.
DHS reserves the right to add countries to the eligible countries list at any time, and to remove any country at any time DHS determines that a country fails to meet the requirements for continued designation.
H-2A and H-2B visas allow U.S. employers to bring foreign nationals to the United States to fill temporary agricultural and nonagricultural jobs, respectively. Typically, USCIS approves H-2A and H-2B petitions only for nationals of countries that the Secretary of Homeland Security has designated as eligible to participate in the programs. However, USCIS may approve H-2A and H-2B petitions for nationals of countries not on the list on a case-by-case basis if it is determined to be in the interest of the United States.
All eligible countries are available from USCIS here.