Secretary of State Rex Tillerson told Fox News that Russia is already trying to interfere in the 2018 U.S. midterm elections.

But he said there are few ways to stop it.

Said Tillerson: “The point is, if it’s their intention to interfere, they are going to find ways to do that. We can take steps, but this is something that, once they decide they are going to do it, it’s very difficult to preempt it.”