In her rebuttal to President Biden’s State of the Union speech Thursday night, Senator Katie Britt, Republican of Alabama, told a story about a Mexican woman who was a victim of sex trafficking at the age of 12, laying blame at the feet of the current administration.

“President Biden’s border policies are a disgrace,” she said.

The story, while wrenching, was highly misleading.

Although Ms. Britt did not name the victim in her speech, she has previously shared the story of a woman who appears to be the same individual based on congressional testimony, news releases and news reports.

That woman, Karla Jacinto Romero, is a Mexican citizen who does not live in the United States and who has spoken frequently about her experiences of being forced into sexual slavery for four years. In 2023, Ms. Jacinto participated in an event near the Texas border with Mexico that was also attended by three senators, including Ms. Britt. In a video released shortly after that trip, Ms. Britt discussed Ms. Jacinto’s experiences.

In her speech Thursday, Ms. Britt talked about the harrowing story as part of a critique of President Biden’s border policies, saying that “we wouldn’t be OK with this happening in a third-world country.” She added that “this is the United States of America, and it is past time, in my opinion, that we start acting like it.”

In fact, as first reported by the independent journalist Jonathan Katz on TikTok on Friday, Ms. Jacinto’s experiences did not happen in the United States. She has testified that she was kidnapped in Mexico City and that her shocking experience of being raped thousands of times took place entirely in Mexico. Moreover, she has said the kidnapping occurred in 2002 and she was rescued in 2006. Ms. Jacinto continues to live in Mexico and does not appear to have ever lived in the United States or to have sought asylum here.