"Sín País (Without Country) as well as other works of art such as "La Realización" (The Realization) are autobiographical self-portraits.  Isadora's early work focused on immigration, and was rendered in the forms of stamps. In a series of portraits, she explored the dichotomy of freedom awarded to a postage stamp in contrast to the strict regulations placed on human beings even when migration is a need rather than a want .  When her own immigration case fell prey to bureaucratic mistakes and political pitfalls, Isadora utilized her art to shed light on the plight of immigrants, in order to bring awareness and positive change. Isadora's alien number became her artist signature, and visa numbers, lawyer names and expiration dates were incorporated into her images as markers of time, adversity and realization.