I came to USA on 10-Aug-2011 on my B2 visa to write my CPA(Certified Public Accountant) exam. In port of entry the immigration officer gave me the stamping till 10-Nov-2011. On 01-Nov-2011 i filed for my B2 visa extension, I got my I-94 till 26-Feb-2012. I found an employer and filed H1B petition in the month of SEP-2011. I got RFE in the month of JAN-2012, RFE should be replied on or before 21-APR-2012. My employer answered the RFE in the month of MAR-2012, with in 2 weeks i got the result and it got rejected on 20-MAR-2012. I traveled back to India on April,21-2012.
Am i legal till 21-April,2012 as per (RFE) or only till 20-Mar-2012 as per (H1B rejection date) ?
I am planning to visit USA on Business visa again, will there be any problem at port of entry?