Selected answers from the Dumb SEO Questions G+ community.
Wissam Dandan: I read hlf way but imo imprlementing hreflang between the uk and the USA site where you tell google this is the page for English users in uk and this domain.us/url to English users in usa.
Will solve it
Alan Bleiweiss: Aleyda Solis has a great checklist. https://moz.com/blog/the-international-seo-checklist