It is your responsibility to use your visa correctly.
Some activities that ARE ALLOWED on a B1/B2 visitor visa:
Tourism
Vacation (holiday)
Shopping
Visiting with friends or relatives
Meetings with business associates
Attending a convention or conference
Activities NOT ALLOWED on a B1/B2 visitor visa:
Birth tourism (travel for the primary purpose of giving birth in the United States to obtain U.S. citizenship for the child)
Work that results in payment from a U.S. employer or business
Studying for a degree or academic credit
Paid performances
