I applied online and paid. Is it necessary to stop at the border to get it stamped? I have both the FMM and proof of payment that I received online.
Just wondering if it needs to be stamped.
BTW I already crossed and came back and no problems but no one asked for it and did not show it to anyone. I do multiple crossings all the time and
am wondering if it is still ok. I asked at the border but they just did not have an answer as to if it is valid or not. I assume that it is valid as
it has a expiration date and I have proof of payment.
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