not very clear "the Principal Applicant being considered "Eligible to Apply for PR" "...means ...You mean it involves a number of criteria the PA must satisfy to be considered eligible to apply? And also I am curious whether they will ever make public this OB570...
Exactly, we don't really know what criteria need to be satisfied before being eligible to apply for PR, but OERB can ask CIC for it, so it does exist. Maybe one of you can fill out an ATIP request to ask what CIC's criteria is? There must be a policy somewhere.
Is it common to make it public via ATIP if it's not intended to be public in the first place?
It's all case-by-case. The whole point of ATIP is for the public to be able to find out what the government is up to, regardless of whether they want it to be public or not, just like our GCMS requests. It's not up to CIC to decide whether ATIP releases an OB or other data. It's up to the ATIP department. And even if they decline, it can be appealed.
Lots of juicy info that newspapers get about what the government is up to is from ATIP requests. Corporations also request them to see if/why they didn't get contracts.
They can only decline to provide information if there's a genuine reason for keeping it secret/private: e.g. national security, cabinet confidence, etc.
All ATIP requests are published here:
http://open.canada.ca/en/search/ati
There are instances of Operational Bulletins being released. Sometimes "Disclosed in Part", sometimes "All Disclosed".
Here's one completed request:
Request Number: A-2017-13794
Organization: Immigration, Refugees and Citizenship Canada
Disposition: All disclosed/ Divulgation complete
Year: 2017
Month: February
Number of Pages: 4
Request Summary: A copy of the operational Bulletin 595
Make an informal request for: A-2017-13794 (CIC)
Who knows what OB595 is about, but someone must have seen it mentioned somewhere, asked for it, and got it. There's no mention of it anywhere on the internet.
It's worth the $5 to find out rather than debate whether it will be released or not.