8 U.S.C. § 1351 : US Code - Section 1351: Nonimmigrant visa fees

Search 8 U.S.C. § 1351 : US Code - Section 1351: Nonimmigrant visa fees

The fees for the furnishing and verification of applications for
visas by nonimmigrants of each foreign country and for the issuance
of visas to nonimmigrants of each foreign country shall be
prescribed by the Secretary of State, if practicable, in amounts
corresponding to the total of all visa, entry, residence, or other
similar fees, taxes, or charges assessed or levied against
nationals of the United States by the foreign countries of which
such nonimmigrants are nationals or stateless residents: Provided,
That nonimmigrant visas issued to aliens coming to the United
States in transit to and from the headquarters district of the
United Nations in accordance with the provisions of the
Headquarters Agreement shall be gratis. Subject to such criteria as
the Secretary of State may prescribe, including the duration of
stay of the alien and the financial burden upon the charitable
organization, the Secretary of State shall waive or reduce the fee
for application and issuance of a nonimmigrant visa for any alien
coming to the United States primarily for, or in activities related
to, a charitable purpose involving health or nursing care, the
provision of food or housing, job training, or any other similar
direct service or assistance to poor or otherwise needy individuals
in the United States.