Just because he won doesn't mean we should just roll over and deal with the fact that a foreign nation succeeded in influencing our nation's election.
Well, the God-Emperor had help from Moscow. That much we know. The Russians were very much pro-God-Emperor Trump because, a deal's a deal and Trump is a yuuuge negotiatior.
That is not even the worse part. What happens when Trump tries to dine and dash or when Putin has decided the US Alt-Right has outlived their usefulness?
To be honest, putting aside my snark, I think that Russia will definitely try to manipulate Trump, who is very ... easy to do so and has isolationist tendencies. In other words, Russia will take advantage of Trump's inability to aggressively stand up to Moscow. He's stated as much during the campaign.
Russia is not interested, as foreign policy experts have said, in meddling with our elections as much as creating instability. If they mess with Trump, I can imagine how ... "prepared" his team will be. (aka not very).