[Comparative Advantage]

Are you sure that is how it unfolds? I know somebody who has received two copies of the ACS but does not plan to complete it.

[KarlInOhio]

Yes. I got hit at the end of 2008/beginning of 2009. They never caught me at home when the visits started. I think they left four notes ranging from the cajoling (your country needs you to fill out the ACS so your community can get all sorts of free stuff) to the threatening (under United States code XXXXx you are required to provide the requested information of be subject to fines and possible jail time). After three months I never heard from them again.