Donald Trump Jr., Trump's eldest son, will join the board of PSQ Holdings, the owner of online marketplace PublicSquare, according to people familiar with the matter. Donald Jr., who recently became a partner at investment firm 1789 Capital, is expected to join PSQ's board as early as Tuesday, a person familiar with the matter said on condition of anonymity. West Palm Beach, Florida-based PSQ declined to comment. Donald Jr. himself did not respond to a request for comment. PublicSquare aims to connect "patriotic" businesses and consumers and seeks to build a so-called "parallel economy," which it defines as prioritizing faith and family.