Travelling to US with a UK criminal record
I am planning a trip to Boston, to see my daughter who is now living there. I want to take my partner who has a criminal record for a minor offence more than five years ago. I understand that you are not allowed into the USA with a criminal record, but I've also been told that there is no way of the US authorities knowing if he has one or not. Can anyone advise on this. Also, what would happen if he went there and they did know, would he be back on the next plane?