I'm an international student studying in US. Recently, my friend in Europe wants to do business with a company in Boston. The Boston company wants to sell their product (such as fish oil, nutrition products, etc...) to my friend. My friend will then redistribute the products in Europe. They talked with each other via phone and email and reached some oral agreement. But in order to make a formal contract, the Boston company wants a person in US to co-sign for my friend ( in case...). Naturally, my friend asked me if I can help him. While I have no interest to get involved in business issues, I do want to help him. I just don't know if this will affect my studying here. As a student I don't want to get any trouble. Any suggestion? Please help. Thanks a lot!