Coming off the high of winning 31 games, Jeopardy! champion Jamie Ding now has a serious issue to worry about — voter registration in New Jersey. President Donald Trump is trying to turn over full voter registration in the state, and Ding, from Lawrenceville, New Jersey, is fighting him on it.

Ding is involved in a federal court battle in New Jersey to protect voter privacy, according to the New Jersey Globe. New Jersey state officials want to block the U.S. Department of Justice from obtaining the state’s complete voter registration list. It is a database that includes personal information of over six million New Jersey residents, including voters’ names, addresses, birthdates, partial Social Security and driver’s license numbers.

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