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This video itemizes the fundamental legal questions that the Census Bureau refuses or fails to answer about its collection and use of personal information from every American.

Without any apparent authority, the Census Bureau has expanded its information-gathering activities.
The Constitution allows the government to count people once every 10 years,
but does not require any American to be counted, or to provide any information at all.

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They are allowed to collect the NUMBER OF PEOPLE IN YOUR HOUSEHOLD.  
That's it, nothing more.