[1] He worked in advertising and marketing and was a sales associate for B.F. Goodrich, a job through which he came to gain a very complete knowledge of Bogota, something that would prove very useful in his political career later on.
Villamizar entered politics and became an ally of leading politician Luis Carlos Galán in seeking to limit the power of Pablo Escobar of the Medellín cocaine cartel.
As leader of the Nuevo Liberalismo[1] in the Chamber of Representatives of Colombia, Villamizar won passage of the National Narcotics Statute in 1986 which was the first general legislation against drug trafficking.
Villamizar is portrayed by the actor Gustavo Angarita Jr. in TV Series Escobar, el patrón del mal.
Villamizar is portrayed by the actor Juan Pablo Raba in the Amazon Prime series News of a Kidnapping.