Former Tennessee House speaker sentenced to 3 years in prison in legislative mail schemeFormer Tennessee House speaker sentenced to 3 years in prison in legislative mail scheme View PhotoNASHVILLE, Tenn. (AP) — A former Tennessee House speaker was sentenced Tuesday to three years in prison after being convicted in a scheme with a onetime aide to win taxpayer-funded mail business from lawmakers after scandals drove the two out of their top leadership roles. Casada’s former chief of staff, Cade Cothren, was also convicted in the case and received a 2 1/2-year prison sentence last week. The current House speaker, Cameron Sexton, had been floated as a star witness but ultimately did not testify. He has said he helped authorities in the case against his predecessor since Sexton took the speaker job in 2019. Neither Casada nor Cothren testified at trial.