As an American living in Canada, I've had my US PSN account since I got my ps3 back in 2006. Sony will not allow a country change even if it's the same region. I cannot add funds via credit card or PayPal because of my address. It isn't really an option for me to make a new PSN account as the Sony representatives so casually suggest, all of my friends, trophies, online purchases, and everything else are on this one profile... 11+ years of gaming.

A few years ago I located a service that provides the purchase of PSN currency codes from tons of different countries (including the US). I'm guessing there are other sites out there that offer this same service but I've never had a problem with PC Game Supply. (link below)

www.pcgamesupply.com

Hope this helps someone