The month of September has been one of the busiest months for the arrival of refugees in the United States. Almost 79,000 refugees from 78 countries have come to the U.S. since October of last year. That is the largest number of refugees coming to America in 17 years, according to official data. The effort to bring more Syrians fleeing violence in their country has made September the busiest month for arrivals in 10 years. The U.S. refugee program is operated by several federal agencies. These agencies still expect that 85,000 refugees will arrive by the end of September. Michel Tonneau is a staff member with the U.S. refugee program at the International Organization for Migration’s Washington office. He said his agency had bought enough airplane tickets for the targeted number of refugees to reach the U.S. by the end of the month.