My wife and I are pursuing IVF and fertility treatment abroad due to our being much cheaper abroad with good outcome. She has a green card that will be expiring middle of 2023, we also got a reentry permit for her that is will be good for 2 years. These are all time sensitive and she may have to stay longer abroad if she is pregnant because she probably cannot handle a flight back while pregnant.
If she stayed abroad for these treatment and giving birth abroad after her green card expires, will be be able to come back to the United States? If she can, will the airline allow her to board with a up to date reentry permit but expired green card? Would the American consulate abroad able to issue paperwork her to get back into the USA due to our circumstances?