Note: For the NRI readers, The Economic Times has started an immigration helpdesk. A team of experts which includes Rajiv S. Khanna addresses the most pressing issues. Please see the link below.
Immigration.Com has received the following question, which I think is important enough to be answered in a format accessible to all the people abroad interested in starting a business in the USA.
The Question
What kind of problems can employment-based nonimmigrants (H-1, L-1, E-1, E-2, E-3, TN) face during reentry?
I think this question is most relevant for H-1 holders, but other employment-based nonimmigrants may also note the general principles here.
The following FAQ should cover the issues.