Over time, Jolie has become more involved in promoting humanitarian causes on a political level. She has regularly attended World Refugee Day in Washington, D.C., dedicated to raising awareness of the situation of refugees throughout the world, and she was an invited speaker at the World Economic Forum, an annual meeting in Davos, Switzerland which brings together top business leaders, international political leaders, selected intellectuals and journalists to discuss the most pressing issues facing the world including health and the environment in 2005 and 2006. Jolie began lobbying humanitarian interests in the U.S. capital, where she met with members of Congress at least 20 times from 2003.