Could someone please rephrase this for me, because every time I read it I get tangled up:
According to the Second Circuit, there is no principle of administrative law which, absent a disagreement between a hearing officer and reviewing agency over demeanor evidence, obviates the need for deference to an agency's final decision where such deference is otherwise appropriate. (http://caselaw.findlaw.com/us-9th-circuit/1214593.html)
I don't need you to explain the technical terms, just simplify the text around the technical terms. Let's start with getting rid of "absent."