The lawsuits argue that the 14th Amendment to the U.S. Constitution guarantees citizenship for people born and naturalized in the U.S.
Alonso played with the Sounders for 10 seasons, tallying four MLS All-Star appearances and helping lead the Sounders to their first MLS Cup in 2016.
PowerSchool, a widely used platform among districts in western Washington, including Seattle and Everett, confirmed the breach.