Secretary of State Marco Rubio testified in the criminal trial of former Representative David Rivera regarding illegal lobbying for Venezuela.David Rivera and associate Esther Nuhfer are accused of money laundering while working as unregistered foreign agents for Nicolás Maduro.Federal prosecutors allege the defendants used a fifty million dollar oil contract to influence the US government to ease sanctions.Marco Rubio is the first sitting Cabinet member to testify in a criminal case in over forty years and detailed his friendship with the accused.