(January 30, 2017, 12:10 PM EST) -- PHILADELPHIA — The Third Circuit U.S. Court of Appeals on Jan. 26 affirmed the exclusion of expert testimony with regard to background on the culture of sex trafficking because it would not assist in helping a jury determine the guilt as to the offenses charged (United States of America v. Anthony F. D’Ambrosio, et al., No. 16-1844, 3rd Cir.; 2017 U.S. App. LEXIS 1388)....