The most recent article I saw on it [1] says that "within the year" Obama is likely to sign an executive order that allows for the founders of funded startups to get visas, dependent on the amount of funds raised. If you raise $200,000 from a qualified U.S. investor you will get a two-year entrepreneurship visa to come live in America. If you raise $750,000 or more from a qualified U.S. investor or group of investors, you will get a green card. As someone who would benefit from this action, it can't come soon enough.
I don't think raising money should be an indicator here though. For example, we bootstrapped the company till about $1M in ARR, and I know a lot of great startup that were 100% bootstrapped.
[1] http://www.forbes.com/sites/karstenstrauss/2015/04/08/how-ob...