Mohammad Sharafoddin, his wife and young son managed to make it out of Afghanistan as refugees nine years ago, at one point walking 36 hours in a row over mountain passes.

The travel ban goes into effect Monday, leaving many to fear a future in which they can't visit family or loved ones are unable to escape dire circumstances in their home countries.

President Trump on Wednesday signed a travel ban on 12 countries, primarily in Africa and the Middle East, reviving an effort from his first term to prevent large numbers of immigrants and visitors from entering the United States.