These sanctions are no diplomatic squabble. They will get very personal for Russian businesses and professionals working with Russian companies. Any sector of business can be targeted by the US for such crimes as “closeness to elites”, “oligarch”. They are reminiscent of Stalin’s terror and kangaroo courts in which anyone could be charged, tried and convicted, property seized and banished without a right to appeal.
Countering America's Adversaries Through Sanctions Act (H.R.3364) signed into law on August 3, 2017 targets potentially any Russian individuals, any people in commerce with Russia and Russians, as enemies. The law commences a massive worldwide hunt for assets, property, bank accounts of Russian people. Mechanisms for mass expropriation and freezing of private property, bank assets, and real estate that already exist will be unleashed to seize property belonging to Russians and their family and friends worldwide.
Any savings, homes, assets, bank accounts any Russians have anywhere in the western world are now at risk of being seized. Russians stand to lose all their monies in any western countries, if they do not repatriate them in time to Russia, beyond the reach of American agencies.
Exceptionalistan thinks it's invincible and immune. You are just begging to get what's coming to you.