He began working as a postal carrier while living in Colorado which he continued when he moved to Durham, North Carolina to pursue his post-secondary school education.
[3] During his time there, he became more interested in black history and was inspired by Pauli Murray's book Proud Shoes: The Story of an American Family.
The book was divided into seven distinct periods of African-American history which examined how white individuals fought against racial equality whenever discrimination was attempted to be nulled.
[2] While at the university, Rubio wrote his second book titled There's Always Work at the Post Office: African American Postal Workers and the Fight for Jobs, Justice, and Equality, which was a re-publication of his thesis.
[6] During the COVID-19 pandemic, United States President Donald Trump refused to grant any additional funding to the USPS because he wanted to prevent any increase in balloting by mail.