I'm not sure he understands it's his own A.G. Barr who's saying nothing to see here, and refusing to investigate.
Not the dems.
Or is it a ploy of some kind.

After US attorney general William Barr dismissed the possibility of investigating 'Obamagate', president Donald Trump responded 'If it was me, they would do it'. The president has called 'Obamagate': "The biggest political crime in American history, by far!" However Trump has failed to detail his exact accusations.
'If it was me, they would do it': Trump reacts to dismissed 'Obamagate' investigation – video | US news | The Guardian