Mr. Lat pens the Latin-laced blog under the pseudonym "Article III Groupie" (an homage to the section of the Constitution that established the federal judiciary). In November, in an article by Jeffrey Toobin in The New Yorker, the shoe-loving, diva-esque female narrator was unmasked as the cherubic, cardigan-wearing Filipino-American Mr. Lat, 30, an assistant U.S. attorney in Newark. The blog was immediately placed behind password-protection.

"A3G" reemerged publicly on New Year's Eve, however, a day after Mr. Lat sent an email to colleagues informing them that he was leaving to pursue a job in Washington, D.C.

Mr. Lat was out of the country—in India—and could not be reached for comment.
—Anna Schneider-Mayerson