Good question! I'm simply highlighting the fact that US citizens are welcome in PT because there's always been a "special relationship" between the two countries for various historical reasons.
Portugal is one of the most welcoming countries to people of all nations. You will never be unwelcome here regardless of where you are from. There are communities of people from the Middle East, Nordics, Indian Sub-continent, China, Africa (South America, obvs) and if you go out to the "trendy" parts of town and listen to the range/variety of accents it's every bit as "cosmopolitan" as London's Shoreditch/Soho! Just book a trip and see for yourself! ;-)
Portugal is one of the most welcoming countries to people of all nations. You will never be unwelcome here regardless of where you are from. There are communities of people from the Middle East, Nordics, Indian Sub-continent, China, Africa (South America, obvs) and if you go out to the "trendy" parts of town and listen to the range/variety of accents it's every bit as "cosmopolitan" as London's Shoreditch/Soho! Just book a trip and see for yourself! ;-)