Elon Musk's four-year-old son X Æ A-12, who he shares with Grimes, almost caused havoc during his dad's speech at Donald Trump's pre-inauguration rally.

Trump says he will sign "lots" of executive orders tomorrow, telling the crowd it will make them "extremely happy". By the time the sun sets tomorrow the "invasion of our borders will have come to a halt" and "all the illegal border trespassers will in some form or another be on their way back home", he says.

Little X AE A-12 made an unexpected appearance at the rally just hours before the US President-elect's inauguration.