美国：How long can you stay in the US after you have lost your job?

You have 10 days to depart the US after termination of employment. I think it’s difficult to get a visa transfered within 10 days as it should usually take around the same time as it did when you applied for one in the first place. The only way I see this working is if you had a new job lined up before you quit your old one, and thus began the transfer process well before you actually quit your first job. This is how some of my friends on H1-b have gone about it.

http://www.yasserinamerica.com/blog/?p=14