The State of California – along with several California cities and the Los Angeles Unified School District - are challenging President Trump’s attempt to exclude undocumented immigrants from the state-population totals that are produced by the 2020 Census and used for apportioning seats in the U.S. House of Representatives and votes in the Electoral College. This case is pending in the U.S. District Court for the Northern District of California.
https://www.brennancenter.org/our-work/court-cases/california-v-trump