Few people were more obstinate on this issue than Trump, but even he eventually acknowledged the Russian hacking:
No, he appeased the IC spooks who finally "briefed" him with their opinions. If you recall, the IC put out a public version of their opinion, and were said to reserve a private "classified" opinion for the President. If you recall, the public report was an embarrassing failure to connect the dots, offering more opinion than facts. This left everybody assuming the facts were contained in the classified version of the spook narrative. Turns out the classified version was just as absent with facts, and equally prescient with opinions, according to Rep. Steve King who was included in the classified briefings.
Rep. Steve King: Russia election story a 'CNN narrative'
http://www.washingtonexaminer.com/article/2614852/
"Rep. Steve King, R-Iowa, argued Wednesday that Russia's alleged attempts to influence the U.S. election are just a "CNN narrative," and is not something intelligence agents have been able to prove as true in classified briefings with Congress."
"There was dissent among that, and furthermore, I sat in on that classified briefing, and they divulged not one fact," he said. "They only gave us their opinions. So we're back at the same place again. We need facts to work with."
If you see these briefings as opportunities for the IC to gaslight and serve koolaid, you can understand why Trump was reticent to attend all the IC church meetings during the transition. When Trump finally did attend the IC's revival of Russiaphobia prayer meeting, he did walk out of it bamboozled enough to say something, briefly and vaguely, seeming to agree with the IC priest's prophecy about Russian interference. At that time, i thought, they are going to hang that around his neck, like a millstone. I thought, why the hell is Trump appeasing the IC high priests and their scripture quoting scribes in the globalist wing of the MSM?
So i fault Trump for giving them an inch, once.
I believe the inch he gave them has come back to bite him as he continues to appease neocon warmongers regarding this narrative, giving up Flynn to protect Pence's stupid remarks about how nobody has ever contacted the Russians for any reason.
It's this appeasement that is getting Trump deeper and deeper into hot water, unable to discern who to trust, and why. I regard Trump's statement in this regard his first major mistake. I am not surprised to hear Rep. King is wholly unconvinced that the classified version of the narrative contained any more facts, or any fewer opinions than the unclassified version.
The question is, does Trump still, really, agree with the IC high priests that the Russians "hacked" our elections?