§237-22 Conformity to Constitution, etc. In computing the amounts of any tax imposed under this chapter, there shall be excepted or deducted from the values, gross proceeds of sales, or gross income so much thereof as, under the Constitution and laws of the United States, the State is prohibited from taxing, but only so long as and only to the extent that the State is so prohibited. [L 1935, c 141, §3; RL 1945, §5458; RL 1955, §117-19; am L 1957, c 34, §11(j); HRS §237-22]