Honestly I don’t think this is a thing in the US… or maybe it is and I just haven’t seen it in my circles? (I travel in diverse circles)
Interesting topic though… I’ve started 3 different trains of thought and back tracked! I’ll try to pick one and stick with it!
I don’t think men are expected to make more than women, and I’m not even sure they do as a rule. Generally It’s pretty even from what I can gather (I don’t spend a lot of time grilling my friends on their finances). Most I know have a spouse in a more or less similar ’rank’ as their spouse. So either they are both in lower , middle, or higher salary range. (Admittedly I don’t really know any ‘Ladies who Lunch’). From what I’ve seen if there is a big difference in earning, it really is split pretty even who has job that would earn more.
You can’t even reliably use the ‘blue collar’ vs. ‘white collar’ as a good indicator of earnings. I have a white collar job while my husband has a blue collar job and we’re pretty close to even on salary (we’re w/in 30K of each other) but over or lifetimes he’ll end up making more than me due to his pension. I had to tell my boss when asked what it would take to relocate me that the company couldn’t afford it. We’re committed now to his job (and location) because of the pension.
One big difference between the UK and US is going to be the maternity leave. Sure there are a fair amount of women who leave the workforce after having children, but it’s not as common I don’t think. 12 weeks is more or less a blip on the radar as far as a career goes, and part time work is not as common here at the professional level. So generally speaking, a woman has a baby, and picks up right where she’s left off at her current job. So I think there is less ‘moody tracking’.
All of this is anecdotal, but it is based on 20+ years as a professional + knowing a fair amount of detail of those in other professions and walks of life.