I know that this topic has been covered before, but I just want to make sure that there haven't been any recent changes that I should know about. Perhaps, I'm being a little paranoid here... 
My AOS application is pending (interview this month) and I hold a valid (until November 2008) H1B visa. I intend to travel to Canada tomorrow and come back in a week (business trip). Is it still true that I can use my H1B for that trip without facing any adverse consequences? Does anybody know of any recent changes in the regulations that could cause me trouble?
Thanks in advance and sorry for beating a dead horse here...

My AOS application is pending (interview this month) and I hold a valid (until November 2008) H1B visa. I intend to travel to Canada tomorrow and come back in a week (business trip). Is it still true that I can use my H1B for that trip without facing any adverse consequences? Does anybody know of any recent changes in the regulations that could cause me trouble?
Thanks in advance and sorry for beating a dead horse here...