One of the elements of the E-2 Treaty Investor visa is that the investment must be substantial. This is generally thought to be roughly $100,000, but this is not a hard and fast rule. It is certainly possible to get it for less, and it is certainly possible that if you invested more than $100,000, that the case is not approved. It’s really going to depend on the post that is reviewing the application and other circumstances such as the type of investment into a particular business that is being made.