President Donald Trump has called for a “new” census that excludes undocumented migrants from its count. If this new census were realized and used for the core functions of the current one — determining how seats in the Electoral College and the US House of Representatives are apportioned and how some federal funding is distributed — it would have wide-ranging implications for the US.

The next census will be taken in 2030. According to NBC San Diego, Trump announced that he planned to omit undocumented immigrants from the count last Thursday. Many civil rights groups have objected to the potential change.