1) Get a job offer from a friend or connection who runs a US business... or... 2) Offer your services at a significant discount to a local worker. Work visa is the fastest, easiest way. Still not easy, but better than marrying someone for a visa.
I think having a strong sense of determination is important and drive is important as well. There are plenty of successful entrepreneurs that left school simply because the education system wasn't right for them. I think this is a complex question, on one hand doing well in school can be helpful ...
From an ethical standpoint I would tell him that he cant wait until you have an exit or sufficient cash flow to buy him out. First he quit. Second, he wasn't performing to expectations, Third, he wasn't there long enough to make much of a difference in the business. You obviously owe him what yo...
Do you have a contract with them that expressly states 1) who the ideas belong to, 2) establish the timeline or expectations of the project, 3) when the working relationship is concluded? It is not unethical to work with one firm to produce one part of a project, and another to implement or take...