That law is finisht, you can now enter USA without questions about HIV, its few years that Oboma cancelled this law...so don't worry about that, if you wanne go to Europe for BB sex and still wanne be in good weather you best go to Gran Canaria, its an island of spain, specially for gays, best location is near Yumbo centre in south in Playa des ingles, Berlin is very good for BB but lot of STD's, Amsterdam is also good for BB, several locations with events specially for poz men.
USA is best you combine your trip with the cumunion party's lots of cumloads to catch, New York, Palm Springs and Fort Louderdale i believe are the best