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Thanks for your reply.
I have not been arrested for selling seeds and have no intention of selling them in the US. I understand that you probably won't be able to give me any definitive answer, but if I were to be questioned about what I do for a living how do you think customs likely react? Would they have a right to refuse me entry because of my profession? I am assuming they can refuse me entry for any reason they want, is that correct?
OK, thanks for your help Alex.
Happy Christmas to you too.