To the extent that our political dialogue is such where everything is under suspicion, everybody is corrupt and everybody is doing things for partisan reasons, and all of our institutions are full of malevolent actors - if that's the storyline that's being put out there by whatever party is out of power, then when a foreign government introduces that same argument with facts that are made up, voters who have been listening to that stuff for years, who have been getting that stuff every day from talk radio or other venues, they're going to believe it.