What is meant by the term value Consensus in sociology?

The U.S. conducts a national census every ten years. I believe the most important result of this census is to make sure that each "Congressional" district among the 50 US States has the correct amount of people in order for Congress to either increase or decrease the numbers of US Representitives for each voting district. There are other lessor benefits for the 10 annual census, however, determining the correct number of elected representitives is vital. For US Senators the census makes no difference as each US State receives 2 Senators in Congress regardless of population counts. Also State governments can also use the census to properly perform the same checking service that helps the national government.