Sure, in a perfect world, everyone who needs a re-entry permit could wait 16+ months for the approval before traveling. But think pragmatically - why are people typically getting re-entry permits to begin with? So many people are heading overseas on short notice to care for terminally ill relatives, or in my wife's case, go back to school where school curriculums and enrollments are independent of USCIS and their timelines.
To illustrate this, let's do a thought experiment - let's say my wife decided just today that she wanted to go back to school and do a 2 year program. Let's say she applies for a re-entry permit today, and waits 16 months before presumable approval in October 2025. Then another month after that to have it in hand and depart, so call it November 2025. Well, if her school program had started in September 2025, she'd be screwed. And if that then meant she couldn't start until September 2026, then guess what, she's screwed that way too because the re-entry permit would expire before her 2 year program would be complete (leaving then having to potentially seek an SB-1 out of the discussion for simplicity). So you either deal with immigration problems on the front end, or on the back end, so whether you wait for approval or not, you'll likely have problems with immigration somewhere. I think pragmatic reasons like this are explicitly why USCIS says go ahead and leave once biometrics are done.
The problem here is it's taking 16 months to approve re-entry permits while a green card is only valid for re-entry for 12 months, and USCIS hasn't provided any guidance on what to do if you are abroad after 12 months and still don't have a decision, despite USCIS having established procedures to explicitly give you the OK to leave the US while the application is pending. The other issue is USCIS historically typically hasn't taken more than 12 months to make decisions on these, so they haven't needed additional guidance prior, which they now need and are lacking. USCIS automatically extends an expiring green card for 2 years while an I-90 renewal is pending; they used to extend it one year, and then changed it to 2 years because at one point they were not able to process a lot of them within that 12 month extension. Why can't they just apply similar logic to the green card's ability to re-enter the country when a re-entry permit is pending? If the green card is typically valid for entry for 12 months but USCIS admits it's taking them 16+ months to process re-entry permit applications, then simple logic would dictate that a pending I-131 should automatically extend the timeframe that a green card can be used to re-enter the US without hassle; set it to be "until a decision is made" or just make the green card good for an additional 12 months - enough to cover even the worst cases. Or, let's say she's abroad at 14 months and I have a catastrophic accident at home and she needs to come home to help me - due to USCIS's own lack of prescriptive guidance, she's officially in purgatory where her green card isn't technically valid for re-entry, yet she still doesn't have a decision on the re-entry permit, so she officially has no legal means to re-enter the country.
Also, USCIS and CBP absolutely should be communicating, when it's a CBP officer deciding if someone can enter based entirely on documentation provided by USCIS; on that note, CBP can see pending items from USCIS in their system upon entry. My wife did a green card renewal in March last year, received it in 2 weeks (wow!!!), but DHS made a mistake in her name, so we had to reapply for another one (boy was that fun to get USCIS/DHS to fix a mistake). We traveled around that time on her old, soon-to-expire green card while waiting for them to correct the original mistake (had to send that errant card back to USCIS), and the immigration officer was a little confused because he could see in the system that she had a new green card just issued (the one with a mistake), another application for another one (to fix the mistake), and yet she was coming into the country on her soon to expire green card (which was the only one she actually had in her possession). So CBP and USCIS do communicate, as they should. To what degree, I don't know though.
Thank you - and that is exactly what we did - they will be sending her re-entry permit to the consulate in Japan for her to pick up.
We'll have to decide what we're going to do here pretty soon, because September isn't far off so if we are going to send her to Guam we will have to start flight shopping soon. Really surprised how hard it's been to find an instance of anyone else in this pretty common situation. Again, given all the ties she has here, etc., and the fact she comes from a close ally/top 5 economy/non-terrorist/safe/low crime first world country with a dual citizen child in tow, I really struggle to see why they would hassle her, but who knows. All depends on the CBP guy that day since USCIS isn't providing guidance.