A piece in today's Guardian entitled "Food fight: doubts grow over post-Brexit standards" not only highlights in some detail the poor agricultural practices in the US which are bound to cause conflict in negotiations for any trade deal but also must have us doubting whether we can reach any sort of deal with the US at all (even Toryboy George Eustice has those doubts). If you think it's just about the talismanic chlorinated chicken spat, read the piece. That particular example of fowl play is just the tip of the iceberg.