If anyone knows the answers to this for USA I'd be very curious (at this time I don't see one). People are mentioning possibly using a 5ghz band? Very weird th

If anyone knows the answers to this for USA I'd be very curious (at this time I don't see one). People are mentioning possibly using a 5ghz band? Very weird that the ubuntu article talks about how easy it is to do this and makes no mention of spectrum license concerns.