A controversial census question on citizenship status could impact California tech companies’ public policy, representation and recruitment as its fate heads to the U.S. Supreme Court Tuesday.

Silicon Valley companies Lyft Inc. and Uber Technologies Inc. have already publicly opposed the Trump administration’s proposed 2020 census question, “Is this person a citizen of the United States?” Critics say the question could dissuade noncitizens from completing the census, leading to inaccurate data with underreporting in immigrant communities.