The thing is, that if Russian sources did take part in the campaign, that is still not really INTERFERING in the election. The things that REALLY INTERFERE in the election are the things that prevent the voters from getting information. After all, the voters make the decisions. They look at all the info, ignore some of it, think about some of it, think about what is good for America, for their community, for their family. And then they vote based on a full review of the info. A campaign blasting one-sided info is not necessarily going to change anyone's mind. If the info is fake, voters will figure that out. And if it is true info, it doesn't really matter whether the voter learns it from a source in Russia or from their neighbor. The facts are the facts.
But what REALLY INTERFERES with an election is when the voter is PREVENTED from receiving information. When Facebook, Twitter and Google censor the information that voters receive that is DIRECT AND CULPABLE INTERFERENCE and is against the Constitution. The right of free speech is not there just for the speakers, but also to protect the rights of the listeners to be fully informed. And what makes it worse is that Twitter, Facebook and Google are censoring information FOR PARTISAN REASONS. They are explicitly attempting to get the voters to vote for the Internet company candidates by preventing the voters from getting info that might make them vote for somebody else.
We should welcome Russian interference and Canadian interference and German interference, because these are just outsiders expressing their own opinions, which we are free to ignore. But we cannot accept that Internet communications companies should interfere in any way with the messages that their customers want them to deliver to us. This is fundamental and it comes from the COMMON CARRIER laws that said freight companies cannot look inside packages to decide whether or not they want to deliver them. Before the COMMON CARRIER principle came in a freight carrier could look in a package and if there were newspapers with a political view they did not like, they could refuse to accept the shipment. Back then subscribing to a newspaper or magazine was a hit and miss affair. We do not want to go back to those days.