First, here’s a quote from Attorney General William Barr
Secondly, here’s Trump’s relevant tweet made in response to AG Barr’s complaint.
“The President has never asked me to do anything in a criminal case.” A.G. Barr This doesn’t mean that I do not have, as President, the legal right to do so, I do, but I have so far chosen not to!
— Donald J. Trump (@realDonaldTrump) February 14, 2020