That's according to a statement issued by the City Attorney Dennis Herrera's office, which you can read in its entirety after the jump. Herrera had demanded that Jew submit tax returns, vehicle registration and utility records by tomorrow to show that the S.F. supervisor actually lives in S.F. Jew has said he has no intention of resigning.
My take: As a legal issue, proving–or disproving–residency is difficult. (Trust me–lots of legal loopholes there.) The politics of it–that's another story. If the allegations are true (or even just appear true), shame will drive Jew out off office before the law does.