I am currently watching a TV show called Border Security, and in this show, immigration officers interview potential candidates for entry into their country, in suspicion that they may have something to do with narcotics.
Usually what I see is that the immigrations officers say something along the lines of this:
I don't care if you have smoken pot on your own free time or in the past, you simply cannot be transporting any across the border
As I am not a citizen of the USA, I have a couple of questions.
1) Is smoking pot illegal?
2) Is it only illegal if you are caught with it in your possession?
3) If someone has admitted to smoking pot in the past, but do not have it on them, can they still go to jail?
4) Many of the immigrants on Border Security have admitted to smoking pot within the last week, but they are still allowed across the border?