See also: Please read this post if your actual expatriation date is before 2004 (Updated)
The blog post on ex post facto stirred up a flurry of e-mails between members of the society. It switched on a light bulb for some that the State Department and the IRS were trying to pull a fast one, and that those who were following rules at the time of their relinquishment were not required to follow the new rules.