The 3 most important things required when travelling are: tickets, passport and visa.....How could u forget them. You might have not forgot taking chocolates, watches, clothes, make-up kits for ur friends and relatives......did u? One of my friend was on OPT and had everything with him, even a letter from employer, when he was returning from india. He was deported back from the USA airport. Rules are Rules and the airport authorities just follow them.