The census happens rarely and impacts politically important concepts like congressional districts. By undercutting the ability to have an accurate census, peopl

The census happens rarely and impacts politically important concepts like congressional districts. By undercutting the ability to have an accurate census, people can gain political advantage. Right now the Republican Party is basically propped up by older white men and women, but that is a rapidly diminishing demographic in the US. Pretty soon it will be dwarfed by other groups of people. By skewing the census, and the rarity at which they happen, Republicans can gain another 10 years or so of influence beyond what they should have (going by the numbers).