[Assuming] Your assets and accounts in any financial institution (at least in USA, likely any advanced nation) can be frozen in a moment on a bureaucratic whim, even absent a court decree. You'll likely have to hire counsel, go to court, etc. to get things unfrozen, even if you've done nothing wrong. Thus the frequent advice to have some cash assets outside the system. If you're rich, that would mean some in foreign freedom-friendly places. Details left to you.