Tax Fairness for Americans Abroad, the organisation I earlier wrote about, currently has a website: taxfairnessabroad.org. On the homepage they say:

Our mission is to ensure tax and financial fairness for Americans abroad by ending Citizenship-Based Taxation.

What we want
The estimated 9 million Americans abroad are already subject to taxation where they live. They shouldn’t also have to declare non-U.S. income or face discrimination and unfair and disproportionate penalties for maintaining bank accounts in the countries where they live just because they choose to live abroad.
Help us end Citizenship-Based Taxation and all the unfairness, high costs and hassles it imposes on Americans living abroad!

On 1 July a press release was published on their global campaign:

As Americans prepare to celebrate Independence Day, American citizens abroad have launched a new global campaign, Tax Fairness for Americans Abroad, to end tax discrimination against U.S. citizens abroad.