(December 31, 2019, 1:41 PM EST) -- NEW YORK — Two nephews of the first lady of Venezuela lost challenges to their cocaine trafficking convictions when the Second Circuit U.S. Court of Appeals on Dec. 20 affirmed the verdicts and 18-year sentences after finding no error in allowing a drug informant to testify as a lay witness, not an expert, on being able to identify cocaine (United States v. Efrain Antonio Campo Flores, et al., Nos. 17-4039, 17-4141, 2nd Cir., 2019 U.S. App. LEXIS 37956)....