"On March 28, 2013, after a week of unlawful detention, Office of the Principal Legal Advisor (OPLA) 'determined that Alfaro has established a probative claim to U.S. citizenship.' In support of its conclusion, the OPLA cited the fact that all it took was a phone call to the Department of Vital Statistics in Texas, to verify the authenticity of the birth certificate, and a phone call to Ms. Alfaro's mother, to confirm that Ms. Alfaro was born in the United States.