Should citizenship be on the 2020 Census? The Supreme Court will decide

Balloons decorate an event for community activists and local government leaders to mark the one-year-out launch of the 2020 Census efforts in Boston, Massachusetts, U.S., April 1, 2019. Credit: REUTERS/Brian Snyder.

On Tuesday, the Supreme Court will hear arguments in one of the biggest cases of the year. It’s about whether the Trump administration can add a question about citizenship to next year’s census. There are big stakes, including the number of seats each state gets in Congress.