Question: What is the ruling in the matter of buying and selling American goods? Is the ruling universal, i.e., does it cover other Western countries, such as France and Britain? Is it to observe this ruling only in Iran or is it universal?
Answer: Should the buying of goods, which have been imported from non-Muslim countries, and using them contribute to strengthening the infidel and colonizing states which are the enemies of Islam and Muslims or provide them with financial support they may use to attack Muslims or Islamic lands all over the world, it is the duty of Muslims to refrain from buying and using such goods.[1] The nature of the goods or their countries of origin is immaterial so long as such countries harbor enmity towards Islam and Muslims. The ruling is not confined to Iranian Muslims.[2]
1. Ayatollah Seyyed Ali Sistani , Question & Answer, Buying & Selling, Q3; Ayatollah Seyyed Ali Khamenei, Practical Laws of Islam, Dealing with non-Muslims, Q1347.
2. Ayatollah Seyyed Ali Khamenei, Practical Laws of Islam, Dealing with non-Muslims, Q1347.