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I'm working with a new site that has a few regional sites in subdirectories /en-us/, /en-au/, etc and just noticed that some of our interior pages (ourdomain.com/en-us/interior-page1/ ) are outranking the equivalent ourdomain.com/interior-page1. This only occurs in some SERPS while others correctly display the non-regional result. I was told we have hreflang tags implemented correctly in the meta information of each of our pages but have yet to research deeply. Should we even have a /en-us/ version when our root domain is the default version, in english, and targeted to US primarily? Any help would be appreciated as I am a little lost. Cheers, Andrew