Ex-FBI informant prosecuted for lying about Joe Biden's son. This development weakens the impeachment investigation led by Republicans in Congress against the American president.

A businessman now converted to painting, Hunter Biden is a favorite target of Republicans in the United States. But the ongoing judicial investigation into the president's son has so far failed to substantiate these accusations. It especially highlighted his problems with addiction to drugs and alcohol - which he claims to have overcome - and led to two indictments against him: one for tax evasion and the other for illegal detention of firearm.