Copied from Above the Law:
In my daily practice, I am often asked: “Do I really need an immigration attorney? Don’t you just fill out and submit forms?” My short answer used to be that for simple, family-based, and citizenship cases, as long as you know how to follow instructions, you could probably apply without an immigration attorney. These days, however my answer is quite different, even for seemingly simple cases. This is what I tell my clients, which I thought would be helpful for people to know.