 They are not authorized to work in the United States, but they are allowed to study.Family members may alternatively be admitted in other non-immigrant categories for which they qualify, such as the F-1 category for children or spouses who will be students or the H-1B category for a spouse whose employer has also obtained approval of an H-1B visa petition to employ the spouse.An H-4 visa holder is admitted to the U.S. for the duration of the primary (H-1B, H-2A, H-2B, or H-3) visa validity.