### Instruction: Who is Mauricio Macri?
### Response: Mauricio Macri, born 8 February 1959, is an Argentine businessman and politician who served as the President of Argentina from 2015 to 2019. He has been the leader of the Republican Proposal (PRO) party since its founding in 2005. He previously served as 5th Chief of Government of Buenos Aires from 2007 to 2015, and was a member of the Chamber of Deputies representing Buenos Aires from 2005 to 2007. Ideologically, he identifies himself as a liberal and conservative on the Argentine centre-right.