A federal judge ruled that the Trump administration violated privacy protections by expanding a citizenship verification program with Social Security data.
The decision halts the government's use of the enhanced system to identify noncitizens on state voter rolls.
Voter advocates say the program can wrongly flag eligible citizens and threaten their ability to cast ballots.
AI-generated summary was reviewed by a CNN editor.
The Trump administration violated federal privacy protections when it overhauled a citizen data program so that it could be used more aggressively to purge voter rolls, a federal judge said Monday.
