I'm Peter Roberts, immigration attorney who does work for YC and startups. AMA

As usual, there are countless immigration topics and I'll be guided by whatever you're concerned with. Please remember that I can't provide legal advice on specific cases for obvious liability reasons because I won't have access to all the facts. Please stick to a factual discussion in your questions and comments and I'll do the same in my answers!

Previous threads we've done: https://news.ycombinator.com/submitted?id=proberts.