Yellow Pages
In yellow pages, circulated to every house hold, free of charge, under photography section there are tons of studios which announce that they are INS approved.
We found one in our city.
There is a tendency in people to blow everything out of proportion regarding green card issue.
Few of my friends pained such a picture that only few chosen studios do INS photographs.
It is BS. There are tons approved by INS and names are available in yellow pages.
Same things goes for medical - there are hundreds in bay area. Web sites and yellow pages announce INS - immigration photography as a selling point.