Richmond was a key figure in helping Biden, a former senator and two-term vice-president, leverage his own long-standing relationships with CBC members.
The congressman, who was first elected in 2010 when Biden was Obama's vice-president, was especially important in outreach to younger lawmakers who, like him, came to Washington later in the 77-year-old President-elect's career.
Richmond has scheduled a news conference tomorrow in which he's expected to announce that he's leaving his congressional seat.
Bloomberg News first reported Richmond's intent to leave his House seat to join Biden's West Wing staff.
Richmond is a graduate of Morehouse College, where he was a varsity baseball player, and Tulane Law School.
On Capitol Hill, he's attempted to navigate both sides of the aisle in an increasingly partisan era. For years, he's been the star pitcher for Democrats in the annual congressional baseball game. He was also among the key negotiators in a bipartisan criminal justice overhaul signed by outgoing President Donald Trump.
Richmond established a strong relationship with House Majority Whip Jim Clyburn, claiming the South Carolina Democrat and highest-ranking black member of Congress as a personal mentor not long after Richmond arrived in the House.
Clyburn's endorsement of Biden ahead of the South Carolina primary was a seminal moment in the President-elect's campaign after his disastrous start in the Iowa caucuses and New Hampshire primary.
Informed of the Richmond news on Capitol Hill, Clyburn said it was "great". He described Richmond as "very gifted, very energetic".
Richmond remains friends with Republican House Minority Whip Steve Scalise from their days in the Louisiana Legislature.
Scalise represents the heavily Republican suburban New Orleans district adjacent to Richmond's strongly Democratic district based in the city.
- AP
