Hi ,
Iam a Green Card Holder since Aug 2008 and i also had a valid H1 petition with my previous employer at the time of resigning my previous Employement in Dec 2009 . In Jan 2010 i recieved a mail from USCIS stating that my H1 B petition (which was approved in 2008) Case has been Reopened
Iam assuming that I got that message since my previous Employer has canceled my H1 B Since i dont work for them now.

Is my Assumption correct ?

1)I have plans to go to india for vacation and come back in May 2010 and wanted to know if this would have any impact at the immigration
2) I just wanted to confirm if this will have any impact on my Green card and wanted to confirm if my PreviousEmployer can cancel my 140 application.Its been 1.5 years since i got Green card in Aug 08