The only way I see the USA trip happening in any way that won't require a 2-week quarantine coming home from the USA by December is a medical cure to Covid-19 that somewhat trivialises it.
Until then, the virus is going to be all throughout the USA until a vaccine hits, making it a constant hot spot.
What I would tentatively bet on:
* A trans tasman/Pacific Islans border opening in 3 months.
* Travel to a very limited, select number of Asian countries opening in 6 months.