The media does NOT have to prove anything; all they have to do is report the facts as they come from the proper government agencies and those agencies' representatives.
IF our Intelligence community (CIA, FBI, etc) reports that the Russians spied on Americans, like Hillary and her campaign members, than what is there for the media to do but REPORT it? But the plump chump Porky Donald duck-lips tRUMP is too busy diverting attention away from himself and the real facts... rather than doing the job he was elected for... through voter fraud and the Russian involvement.
As taxpayers, voters and American citizens, WHERE does tRUMP think we do not have the right to know exactly who and what happened with members of his campaign team with ties to Russian operatives, Russian government members, Russian elite? WHY should we trust him, a KNOWN liar, cheat, crook, swindler? Yes, he was elected... but he still answers to US and we demand to know, as our right AND as his employers whether he likes it or not, and if he doesn't he can resign and go back to private life and hopefully go into obscurity (I-hope-I-hope-I-hope...).