I got H1 approval and they asked me to immediately go to home country for stamping. What is the best answer that I can give when they ask me about the gap where the status was illegal. My stamping is on March 9th 2010 in Chennai.
There are too many variable for me to be able to respond meaningfully. The general answer to your question is that the response must be the truth. Before you leave, make sure you are not subject to the 3/10 year bar from coming back because of unlawful presence. There is an entry on my blog on this issue.