Wearing shirts with the message "Free the Citgo 6", the Vadell family poses for a photo in Katy, Texas, on Friday, February 15, 2019. From left to right are Hayes Weggeman, his wife Verónica Vadell, her mother Ley Dennysse Vadell and sister-in-law Cristina Vadell. Dennysse's husband and her daughter's father, Tomeu, a Citgo executive, has spent 20 months incarcerated in Venezuela along with five other Citgo executives for what their families say are false accusations of corruption. Crédito: AP / John L Mone Univision
In this summer 2016 photo provided by Maria Elena Cardenas shows her, far left, and her husband Gustavo Cardenas, far right, with their children Maria, left, Gus, right, and Sergio, below, as they vacation in Austria. Since Venezuela's government arrested Gustavo and five other Citgo employees in November 2017 in Caracas, their 18-year-old son Sergio, who suffers from a rare metabolic disease called mucolipidosis, has been having panic attacks and screaming at night for his Dad. Maria fears that he could die before his father’s release. Maria Elena Cardenas via AP