Status, authorized period of stay and unlawful presence
Status, authorized period of stay and unlawful presence are three VERY important concepts in US immigration laws with far reaching implications. The nuances in these concepts are so intricate that they can trip up even my fellow-lawyers. I see issues in this all the time.
Here is a brief primier to enable you to understand the basics. This is by no means an exhaustive analysis.
Status
I got my GC approved (AC 21 case) last week. Mr. Rajiv Khanna and His team represented me through this long process. They were very helpful with their advice, suggestions and timely filings. I would really recommend anyone to use this firm to represent you and you will definitely have peace of mind.