Argentina's President Mauricio Macri (L) and Brazilian President Jair Bolsonaro are pictured after the signing of an agreement at Planalto Palace in Brasilia, on January 16, 2019. - Macri is on a one-day official visit to Brazil to address the future of Mercosur and the crisis in Venezuela. (Photo by EVARISTO SA / AFP)        (Photo credit should read EVARISTO SA/AFP/Getty Images)