EXCLUSIVE — A little-known nonprofit group behind a sprawling voter registration effort ahead of the 2024 election is facing congressional scrutiny over concerns about noncitizen voting, according to a letter.

On Tuesday, Rep. Chip Roy (R-TX) sent the letter to Vot-ER, a charity that a Washington Examiner investigation revealed is funded by left-wing dark money groups and partnered with public health centers to register patients to vote. The congressman addressed the letter to Vot-ER director Aliya Bhatia, a left-wing activist, and CEO Judith Faulkner of Epic Systems, a healthcare software company reportedly linked to Vot-ER’s activities.