HRH Princess Lalla Hasnaa was received in Washington by U.S. Secretary of State Hillary Clinton with whom HRH discussed mainly the celebration, in April 2010 in Morocco, of the 40th anniversary of Earth Day.

During this meeting, HRH Princess Lalla Hasnaa also gave an overview of the achievements and projects carried out by the Mohammed VI Foundation for the Protection of the Environment, chaired by HRH the Princess.