Martha Doss, who was naturalized in 2017, is an example of the complexities of Texas’ political landscape amid the immigration debate.On the day Martha Doss became a U.S. citizen in 2017, she couldn’t stop thinking of her mother. “She wanted to desperately be an American,” she said, remembering the woman who brought her and her twin sister from Mexico to the United States when they were children in the mid-1980s. Becoming a citizen meant her mother’s dream of a better life for her children had, in some way, been fulfilled. It also meant that in 2020, Martha could vote in...