Mainly because of the globalization happening, where opportunities everywhere can be grabbed by anyone, it is not anymore unusual to find yourself living an expat life.
But what of Moms who aren't SAHMs and would still like to continue working instead of just staying home in a foreign country? Well, they are actually more than welcome to take advantage of relaxed policies when it comes to working abroad. Sure, companies will still screen you and all but more and more are willing to sponsor you and work visas are easier to get nowadays.
Hubs got a job in Massachusetts? Then submit those Boston resumes asap so arrangements for your interview can be made asap as well. Who knows, you may even land a job already before you and your family gets there and you need not worry overmuch about the conversion rates and your savings running out.