trade or business
(k)An individual shall be considered to be engaged in noncovered remunerative activity outside the United States if he performs services outside the United States as an employee and such services do not constitute employment as defined inand are not performed in the active military or naval service of the United States, or if he carries on a trade or business outside the United States (other than the performance of service as an employee) the net income or loss of which (1) is not includible in computing his net earnings from self-employment for a taxable year and (2) would not be excluded from net earnings from self-employment, if carried on in the United States, by any of the numbered paragraphs of. When used in the preceding sentence with respect to a trade or business (other than the performance of service as an employee), the term “United States” does not include the Commonwealth of Puerto Rico, the Virgin Islands, Guam, or American Samoa in the case of an alien who is not a resident of the United States (including the Commonwealth of Puerto Rico, the Virgin Islands, Guam, and American Samoa); and the term “trade or business” shall have the same meaning as when used in section 162 of the Internal Revenue Code of 1986. (l)The failure of an individual to make any report required by subsection (g) or (h)(1)(A) within the time prescribed therein shall not be regarded as such a failure if it is shown to the satisfaction of the Commissioner of Social Security that he had good cause for failing to make such report within such time. The determination of what constitutes good cause for purposes of this subsection shall be made in accordance with regulations of the Commissioner of Social Security, except that in making any such determination, the Commissioner of Social Security shall specifically take into account any physical, mental, educational, or linguistic limitation such individual may have (including any lack of facility with the English language).