President Joe Biden said on Wednesday that his labour secretary nominee Julie Su is a “real leader” who has supported unions, enforced worker safety and protected the victims of human trafficking.“Julie is the American dream," Biden said in remarks at the White House. “She's committed to making sure that dream is in reach for every American” The daughter of an immigrant mother who arrived on a cargo ship, Su said she believes “in the transformative power of America”. She noted that a union job gave her parents a path to the middle class, one that eventually led her to college at Stanford University and law school at Harvard University.