Donald Trump has dropped in a rather veiled threat against Joe Biden in some of his recent statements after becoming US President, something that is making political circles within the US rather nervous.

In the wake of sweeping last-minute pardons issued by Biden, Trump issued a cryptic warning, suggesting Biden may have left himself vulnerable.

A day that began with the outgoing president’s pardon of lawmakers and his own family ended with the incoming president’s pardon of supporters who attacked the U.S. Capitol

The extraordinary wave of pardons Monday — from Joe Biden as he left the White House and from Donald Trump as soon as he returned to it — demonstrate the potency of the Constitution’s pardon power, but also expose its perils,