modification of agreement with north dakota and iowa with respect to certain students

modification of agreement with north dakota and iowa with respect to certain students Sec. 338. Notwithstanding any provision of section 218 of the Social Security Act, the agreements with the States of North Dakota and Iowa entered into pursuant to such section may, at the option of the State, be modified so as to exclude service performed in any calendar qua it er in the employ of a school, college, or university if such service is performed by a student who is enrolled and is regularly attending classes at such school, college, or university and if the remuneration for such service is less than $50. Any modification of either of such agreements pursuant to this Act shall be effective with respect to services performed after an effective date specified in such modification, except that such date shall not be earlier than the date of enactment of this Act.