(October 19, 2015, 11:47 AM EDT) -- AUSTIN, Texas — An expert cannot testify in a lawsuit alleging a fraudulent business deal that loans constituted the “sale of securities” under the Securities Exchange Act of 1934 and the Texas Securities Act (TSA) and that defendants acted as brokers and dealers, a Texas federal judge ruled Oct. 14 (Steven B. Aubrey, et al. v. Peter E. Barlin, et al., No. 10-076, W.D. Texas; 2015 U.S. Dist. LEXIS 139961)....