
I would contact the breed clubs that are listed at the end of the Kennel Club breed standard on their website.
You will need to mkae contact and gain the confidence of breeders before anyone is likely to consider exporting a puppy. Hae you contacts that you can use as references in the American breed clubs?
This would help enormously, as no reputable breeder will export to someone not personally known to them or someone they know well that can vouch for then, as you can hardly simply have the puppy back if things don't work out if it has goen abroad.