The New York Post this morning:

A phone call between Democratic presidential nominee Joe Biden and former Ukrainian President Petro Poroshenko was leaked Tuesday showing the two former leaders discussing what the then-vice president could and couldn’t tell the incoming Trump administration, with Biden telling the foreign leader that he wants to stay “deeply engaged” in their diplomatic work as a private citizen.

The call, revealed by Ukrainian politician Andriy Derkach, took place on Nov. 16, 2016, just a week after then-candidate Donald Trump won the presidential election.

During the exchange, the outgoing vice president and the then-president of Ukraine discussed the topic of visas, “something we have tried to sell to the Ukrainian people,” Poroshenko said.

The call then went dark and picked back up with Poroshenko saying, “And if President [Obama] can also support us, not only with the means, but with visa-free, that is something we have tried to sell to the Ukrainian people. And still hoping that you can come, maybe on the 21st of November, on our anniversary of the Revolution of Dignity and that would be very big delivery.”

So in other words, Biden was already working donder mine the Trump administration in the area of us Ukraine relations.