Rubio to testify in friend's trial over Venezuela oil deal

TL;DR

Reports differ across sources; according to cbsnews.com, federal prosecutors allege that Rivera worked alongside his codefendant, Esther Nuhfer, to influence the first Trump administration on behalf of then-Venezuelan dictator Nicolas Maduro and then-Foreign Minister Delcy Rodriguez with the goal of lowering political tensions and easing sanctions between the South American country and the U.S.