Now 24, Ms. Bueso, who had been told she likely would not live past adolescence, has participated in several medical studies. She has won awards for her advocacy on behalf of people with rare diseases, appearing before lawmakers in Washington and in Sacramento. Over the years, her parents have paid for the treatment that keeps her alive with private medical insurance.
But last week, Ms. Bueso received a letter from the United States government that told her she would face deportation if she did not leave the country within 33 days, an order described by her doctor, lawyer and mother as tantamount to a “death sentence.”