A refugee family in Rwanda prepares to head to the US
13 August 2014 Last updated at 07:43 BST
It is estimated that 17 million people worldwide have fled their home countries. And the United States houses about 70,000 of them each year.
The BBC's Alan Kasujja has been to meet a refugee family in Rwanda - originally from the Democratic Republic of Congo - as they prepare to make a difficult journey to America.