An H-3 classification applies to an alien who is coming temporarily to the United States:
(1) As a trainee, other than to receive graduate medical education or training, or training provided primarily at or by an academic or vocational institution, or
(2) As a participant in a special education exchange visitor program which provides for practical training and experience in the education of children with physical, mental, or emotional disabilities.
The guidance for issuing B-1 visas in lieu of H is currently under review bur remains in effect until further notice. In order to avoid delays at the port of entry, consular officers are to annotate the B-1 visa with “B in lieu of H, 9 FAM 41.31 N11.”