Americans who may have lived for years outside the US are generally fully compliant with their tax affairs in the country in which they live. However many have been unaware of their continued requirement to file US tax and information returns. These individuals should be considering a voluntary disclosure route (i.e. approaching the IRS before they are found).
We are now in an environment where legislation has been enacted that gives the US authorities unprecedented access to information beyond their own borders. With a recent history of voluntary disclosure programs offered by the IRS, non-compliant taxpayers should be giving very serious consideration to getting back into the US tax system through these opportunities.