On Inauguration Day, both the outgoing and incoming US presidents issued controversial pardons that expanded the scope of power to new limits.
Joe Biden gave family members a preemptive pardon, while Donald Trump pardoned nearly 1,600 people accused of crimes related to the riot at the US Capitol.
BBC analysis editor Ros Atkins looks at how they both cited “politically motivated prosecutions” to explain their actions – and why this poses a challenge to trust in the justice system going forward.