This is about as real as China supposedly having “ties” to the A.F.L. It’s total bullshit and nonexistent.
If America has problems, they’re purely internal and not foreign influenced in any way. Most of these “white nationalist” groups are too small to be of any significance anyway, unless you’re a conspiracy theorist who believes that most people are racist in the first place. There’s more Americans who believe that Union members are secretly aligned with China and Russia than there are Americans who believe anything about Putin, which is a problem because both these theories play off and feed each other even if one is more popular.
We only have to look at the enormous amount of money American companies and rich American people spend on elections anyway. That’s where the real “ties” are.