I entered into the US in December of 2012, I remember filling out the i-94 but I also remember handing it into someone as well. I also don't have a stamp in my passport. Am I going to need to file for a replacement I-94? Also why was I not issued a stamp?I was looking through my paper work that I had, I still have my boarding passes from my flight here, on the boarding pass from Canada to USA there is a stamp, it says I was admitted in Toronto, there is a date but no class filed out. Is this good enough?