Census Bureau officials are counting on an advanced postal tracking system to speed up responses and save the government millions of dollars in follow-up letters and visits by census takers.
But some privacy advocates and lawmakers are troubled by the tracking system, which they say oversteps privacy bounds.
The 2010 Census forms arrive this week at 120 million addresses across the country. Each piece of Census mail comes with a unique barcode that lets the U.S. Postal Service and the bureau track individual letters as they travel to and from the bureau. Each time a letter zips through sorting equipment—typically ...