I have an emergency (loss of a friend) and I am looking at tickets to the US to leave in a matter of hours. I know an ESTA is valid for 2 years. I travelled to the US for the last time 18 months ago but I do not remember if I used a previous ESTA or not at the time.
I want to buy a ticket for a plane that leaves in 6 hours, if I apply for an ESTA online, will it be ok? They recommend doing it at least 72 hours in advance.
Some background: I lived in LA for 11 years with a student visa and never had any trouble with any government agencies (police, immigration etc...). I do not think it will be a problem but I know the immigration agency can be very tedious about their reglementation.