Capital Control
  
Capital control allows governments and other powerful authorities to control how much foreign capital crosses into their countries. But because they can't literally stand at the borders with stop signs (or play Simon Says to tell people what to do), they control what comes in by setting taxes, tariffs, laws, and by using whatever other options they have available to them (you know, the digital/legislative version of "Simon says 'report any transactions over $9,999'").