Network Compatibility of iPhone 14 Pro Purchased in Europe for use in US

Hi all - I'm an American whose iPhone was stolen overseas. I want to buy a replacement iPhone 14 Pro in Europe (Norway specifically), but have heard that the models sold here have different network compatibility qualities compared to those sold in the US. Does anyone know whether this is a big issue, a modest issue, a tiny issue, or no real issue at all when it comes to using a Europe-purchased iPhone 14 Pro in the US? I'd rather not buy a phone that causes me headaches when I'm in the US as I am most of the time. (I've traveled with US iPhones around the world for years and found they've generally worked well no matter where I've been.). Thank you all!