((a)) ** .—** Wages due or accruing to a master or seaman on a vessel in the foreign, coastwise, intercoastal, interstate, or noncontiguous trade or an individual employed on a fishing vessel or any fish processing vessel may not be withheld under the tax laws of a State or a political subdivision of a State. However, this section does not prohibit withholding wages of a seaman on a vessel in the coastwise trade between ports in the same State if the withholding is under a voluntary agreement between the seaman and the employer of the seaman.

((b))

((1)) ** .—** An individual to whom this subsection applies is not subject to the income tax laws of a State or political subdivision of a State, other than the State and political subdivision in which the individual resides, with respect to compensation for the performance of duties described in paragraph (2).

((2)) ** .—** This subsection applies to an individual—

((A)) engaged on a vessel to perform assigned duties in more than one State as a pilot licensed under or licensed or authorized under the laws of a State; or

((B)) who performs regularly assigned duties while engaged as a master, officer, or crewman on a vessel operating on navigable waters in 2 or more States.