Even if the Trump administration uncovers this, they won't be able to do anything. Remember the recount in Michigan? The recount teams found extensive evidence for ballot stuffing by the Democrats in Detroit. But suddenly one of the judges suspended the recount, and destroyed all the evidence.
All they have to do is find (pay off) one living man or woman to claim that he/she was part of the hack team, and they will have a case. It would be interesting to watch the appeals on this one.
Make no mistake. Even the Democrats have admitted that the electronic ballot machines were not hacked. However, they are claiming that the Russian hackers uncovered the vote rigging (in favor of Hillary) during the Democrat primaries, and this in turn contributed to the defeat of the Democrat candidate.