OK another trailing spouse here, I admit I haven't read the whole thread so I apologize (apologise.....damn US autocorrect) if I'm repeating anything. As a bit of background DH and I are both British and have been here 18 months.
I'm in New Hampshire but only just north of the Mass border (yes they are mass-holes esp. when driving). It's honestly the best place location-wise I could ever imagine living. The beach is a 15min drive and mountains are an hour away. We skied all winter and have spent the summer on the beach, camping and hiking. I've fallen totally in love with the place but unfortunately not the Americans..... below is my tuppence:
1, Healthcare system. It's a minefield and, in my opinion, awful. It's primarily there to make money and not look after peoples health. Give me the NHS any day.
2, Driving. Americans are sht drivers. No lane discipline, never use indicators or mirrors and they don't park their cars, they just abandon them across a few spaces. They also drink drive a lot* which horrifies me. My colleagues see nothing wrong with driving way over the limit.
3, Food. Supermarkets are really expensive. This surprised me. Everything is really salty so we make everything from scratch (even bread....). You also can't get all fruit/veg all year round as they don't import. If you eat out the portions are ridiculous sizes.
4, Vacation. This seems to depend on the company. I had a two week holiday booked when I started so they had to honour it if I was to take the role but they'd never grant another one. They were shocked that I would take 2 weeks away from the office.
5, Patriotism. I don't actually agree with strong Patriotism, we're one world in my eyes. We went to St Patricks day in Boston and the crowd started the U-S-A chant. It made us so uncomfortable that we had to leave.
Trump actually doesn't affect our day to day lives much, although we're in a strong democrat area. What's more annoying is listening to people whinge about it all the time.
I don't really know where you'd stand legally with the children if you were to divorce. Best off getting proper advice from an International Lawyer on that. However I'm sure you could work on a US spouse visa?