No part of the compensation paid by a motor carrier providing transportation subject to jurisdiction under subchapter I of chapter 135 or by a motor private carrier to an employee who performs regularly assigned duties in 2 or more States as such an employee with respect to a motor vehicle shall be subject to the income tax laws of any State or subdivision of that State, other than the State or subdivision thereof of the employee’s residence.

In this subsection, the term “employee” has the meaning given such term in section 31132.

In this subsection, an employee is deemed to have earned more than 50 percent of pay in a State or subdivision of that State in which the time worked by the employee in the State or subdivision is more than 50 percent of the total time worked by the employee while employed during the calendar year.

This subsection applies to pay of a master, officer, or sailor who is a member of the crew on a vessel engaged in foreign, coastwise, intercoastal, or noncontiguous trade or in the fisheries of the United States.