This bill, known as the "William Lacy Clay Sr. Memorial Stamp Act," mandates the Postmaster General to issue a commemorative postage stamp. The stamp is intended to honor the legacy and public service of William Lacy Clay Sr. , a prominent figure in American politics. The legislation highlights Clay Sr.'s extensive career, including his 32 years representing Missouri's 1st Congressional District and his role as a founding member of the Congressional Black Caucus . He was a tireless advocate for civil rights, voting rights, and equality, championing landmark legislation that benefited diverse communities. His legislative record includes nearly 300 bills that became law, significantly impacting areas like fair labor standards, federal employment opportunity, and environmental justice. Specifically, the bill notes his crucial involvement in the passage of the Family and Medical Leave Act and his reforms to the Hatch Act, which expanded rights for federal and postal workers. The commemorative stamp will be issued in the denomination for first-class mail, with its design and sale period determined by the Postmaster General.