Relations between the United States and Chile deteriorated in the 1960s due to U.S. concerns regarding the Chilean Left and the rise of Chilean nationalization of certain industries, especially copper. The Alliance for Progress, signed in 1961 by President John F. Kennedy, was designed to prevent the spread of socialism throughout the hemisphere. The Alliance allowed for monetary investment in Latin American countries that would help bolster infrastructure, education, and champion democratic governments, and Chile was one of the primary recipients of aid.
