"official doc or other form or evid establishing eligibility at the time of filing." Basically a directive to USCIS bureaucrats to deny immigration apps on easily fixable hyper-technical grds, eg applicant fails to file a certified doc
This, coupled w/a recent USCIS memo directing the commencement of deportation proceedings where an immigration app is denied with no underlying status is ominous.
More USCIS denials=more deportation charges=heavier court backlogs=more deportation.
That’s what this seems to be about.