evidence: When people register to vote, they confirm under penalty of perjury that they are U.S. citizens. Federal law requires states to regularly maintain their voter rolls and remove anyone who is ineligible, a process that could identify immigrants living in the country illegally. [...] Texas Gov. Greg Abbott, a Republican, said last month that more than 6,500 potential noncitizens have been removed from Texas voter rolls since 2021, including 1,930 with "a voter history" who have been referred for investigation by the attorney general’s office. Texas has almost 18 million registered voters. [...] Alabama Secretary of State Wes Allen, a Republican, recently announced that 3,251 people previously identified as noncitizens by the federal government are being switched to inactive status on the state’s voter registration rolls. They will be required to provide proof of citizenship and fill out a form to vote this fall. Alabama has more than 3 million registered voters.