In addition, the US will seek to enforce penalties and interest claims against people who have no connection whatsoever with the US other than the fact that due to their parent's having been US citizens at one time, they have the right to claim US citizenship.The USA and Eritrea are the only two countries in the world that collect tax based on citizenship rather than residency, so some governments are greedier than others.
How would you like to be a Canadian citizen born and always living in Canada and having filed income tax on income earned in Canada for all your decades of tax paying life, only to be presented with tax enforcement penalties for failing to file tax returns (almost always with no tax actually payable) each year with the US as well, all because your father held US citizenship for a while, thus entitling you to seek US citizenship?
It is retrospective application of illogical and unfair standards, based on the utmost of arrogance - that because one might decide to become a US citizen, one is "priviledged" and should be required to fulfill all the obligations of those who accept the advantages of such citizenship.