Complex sentence: He will meet with President Macri in the Casa Rosada of Buenos Aires, being the first trip of Obama to Argentina, and the first trip to be made by an American President since George W. Bush in 2005.
Split into simpler sentences: He will meet with President Macri in the Casa Rosada of Buenos Aires. It will be the first trip of Obama to Argentina, and the first trip to be made by an American President since George W. Bush in 2005.