Why spend money on shipping interdiction/harassment when it's soooo much cheaper and more effective to just use a bit of jujitsu? Overwhelm and foopjazzle our culture and cultural values with dis- & mis-information, stand back, and allow us to destroy ourselves?
Oh, wait! That's what they have been doing... for almost a century, and increasingly with almost complete impunity or even notice. Hell, they've got their own "news" networks broadcasting in America, their own disguised trolls on every "social" "media" platform. And most of the people enthralled by those networks and platforms have no idea they're ingesting Russian saw dust. I would give the Russians high kudos for a job well done, save for the fact that we ourselves built Vlad's culture-fritzing EMP weapons for him. Cheap, unmediated transmission tools combined with the extreme demise of American intellectual capacity renders us a pretty soft target in all the ways that really matter.