Joe Biden has granted his son Hunter Biden a full and unconditional pardon following his criminal conviction on tax and gun charges. The US president's only surviving son was due to be sentenced this month. The 82 year-old had repeatedly stated he would neither interfere in the judicial process nor use his presidential power to pardon him. So why the u-turn and what will the fallout before Democrats and Republicans alike? Our Washington correspondent, Keith Duggan explains.

Presented by Bernice Harrison. Produced by Aideen Finnegan.

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