Immigration judges aren’t article III judges or state judges where there’s an election-retention process. They’re administrative law judges. The immigration process is pretty much like the DMV but in a psuedo-courtroom. I’m shocked the NY average is so high.
The last data i’d seen on this is at http://trac.syr.edu/immigration/reports/160/index.html. I’m not sure what the “true” asylum grant rate should be, but it should alarm everyone that the percentages vary so wildly between immigration judges.
A lot of the immigration judges are probably former immigration lawyers. As a class, these types of lawyers are more likely to be pro-amnesty, anti-border enforcement types.