It's morally important to have a diverse client base. Cathy Brooks-Oliver, owner of CBO Custom Travel in Scottsdale, Ariz., believes so, emphatically. "I'm a citizen of this world, and specifically, I am a citizen of the United States. I want my client base to reflect the environment and world that I move in." And there is also a compelling financial argument behind diversifying your client base. In a 2018 study, Mandala Research found that Black travelers contributed $63 billion to the U.S. travel and tourism economy, up 31% from $48 billion in 2010. Last month, new research from MMGY Global found that Black leisure travelers spent $109.4 billion on travel in 2019. It's difficult to compare similar, but different studies, yet even so, the increase from Mandala's 2018 number to MMGY's 2019 number would represent a whopping 73%.