Nothing contained in this chapter shall be construed as imposing a license tax on or otherwise regulating or restricting any business which is exclusively engaged in interstate or foreign commerce or any portion of a business which portion is engaged in interstate or foreign commerce; provided, that every person claiming to be entitled to such exemption shall me with the city clerk a verified statement disclosing the interstate or other character of the business upon which the party bases their claim for such exemption, in such form as may be required by the city clerk. The city clerk may determine whether the applicant is entitled to the exemption claimed or may refer the same to the city attorney for such determination. The city clerk shall issue to the applicant a license certificate for such business or portion of a business which is entitled to exemption under this chapter without requiring the payment of a license tax therefor. (Ord. 89-12 (part), 1989)