Do you think this could be an ‘airline by airline’ decision, where it’ll be left to each airline to decide and they get to create their own specifications and boarding processes?

from a gov standpoint, the upcoming administration hasn’t seemed to ever address this issue. However, Delta’s plans to make the accessible seat for wheelchairs seems to be a step in the right direction at least

I haven’t flown to the US since I have been in a wheelchair and I hope it becomes easier and easier for people like me to travel to the US as I have a brother who lives there

Yes. I am concerned because Trump is not likely to require any improvements.