Time line for I 600A approval in Portland, OR

I don't know. Is there any way you can call them? They should be able to give you an idea of the turn-around time.

You can track estimated processing times from the USCIS website: [URL="https://egov.uscis.gov/cris/processTimesDisplay.do"]https://egov.uscis.gov/cris/processTimesDisplay.do[/URL] Select your Field Office

The dates/processing times on that site are notoriously inaccurate and not updated very often. There are very few offices that have a published phone number (I didn't see one for yours) so your best bet is to email (luckly there is an adoption email) or make an INFOPASS appointment. Personally I would email them, or have your homestudy agency contact them. yakima.adoptions@dhs.gov Good luck!