Presidency of Cristina Fernández de Kirchner 10, 2007, facing challenges including inflation, union demands for higher salaries, private investment in key areas, lack of institutional credibility (exemplified by the controversy surrounding the National Institute of Statistics and Census of Argentina, INDEC), utility companies demanding authorization to raise their fees, low availability of cheap credit to the private sector, and the upcoming negotiation of the defaulted foreign debt with the Paris Club. Kirchner was the second female president of Argentina, after Isabel Martínez de Perón, but unlike Perón, Kirchner was the head of the ballot, whereas Isabel Perón was elected as vice president of Juan Domingo Perón
Cristina Fernández de Kirchner confided in him that she had a bipolar disorder, while she was having a violent outburst. During the United States diplomatic cables leak it was revealed that Hillary Clinton questioned Kirchner's mental health and asked the US embassy whether she was receiving treatment or not; she later apologized to Kirchner for those leaks. Kirchner said in her book "La Presidenta" that it was all a misunderstanding; it is her sister who suffers from bipolar disorder. On 27 December 2011, presidential spokesman Alfredo Scoccimaro announced that Kirchner had been diagnosed with thyroid cancer on 22 December and that she would undergo