The criminal trial of a former congressman is offering a glimpse into the prehistory of the ouster of Venezuelan President Nicolás Maduro.

Former congressman David Rivera goes on trial Monday over allegations he secretly lobbied for Venezuela’s government during the first Trump administration.

A grand jury in Washington has returned an indictment against former Congressman David Rivera for failing to register as a foreign agent of a sanctioned Venezuelan media tycoon on whose behalf the Miami Republican allegedly lobbied the Trump administration.