 Emphasizing the need to upgrade infrastructure, modernize the tax system and labor laws, integrate with the U.S. economy, and allow private investment in the energy sector, Vicente Fox Quesada, the candidate of the National Action Party (PAN), was elected the 69th president of Mexico on 2 July 2000, ending PRI's 71-year-long control of the office.Though Fox's victory was due in part to popular discontent with decades of unchallenged PRI hegemony, also, Fox's opponent, president Zedillo, conceded defeat on the night of the election—a first in Mexican history.A further sign of the quickening of Mexican democracy was the fact that PAN failed to win a majority in both chambers of Congress—a situation that prevented Fox from implementing his reform pledges.