Actually, no, people sometimes do flee America and seek citizenship or residency in other countries that are more socialist, but those countries are usually within the US sphere of influence. E.g. people go from the USA to Sweden and try to stay there permanently. But Sweden is not an independent socialist country, it's essentially a vassal of the USA. Likewise New Zealand is not really an independent center of power, and plenty of Yanks try to get permanent residence in New Zealand. Those who pull it off get protected by the US Navy but the culture of leftist socialism.