Brown completed a visiting fellowship at the Georgetown Institute of Politics and Public Service[6] in spring 2016.

After serving in the Clinton administration, Brown worked as the executive-in-residence at Jacksonville University's Davis School of Business; president and CEO of the Willie Gary Classic Foundation; executive director of the Bush/Clinton Katrina Interfaith Fund; and chairman of the board of the National Black MBA Association.

In November 2020, Brown was named a candidate for United States secretary of housing and urban development in the Biden administration.

On May 17, Brown narrowly defeated Hogan by 1,648 votes in what was called the closest mayoral election in Jacksonville history.

[3] In August 2022, Brown was nominated to serve as a member of the National Transportation Safety Board by President Joe Biden.