Refer to Problem 9. Based on your answer there, would foreign countries have a reason to object

Question:

Refer to Problem 9. Based on your answer there, would foreign countries have a reason to object to the use of a sales tax on cigarettes by the United States? Based on your knowledge of the GATT/WTO provisions (see Side Bar: Key Provisions of the GATT, in Chapter 8), are foreign countries entitled to object to the use of such a tax?