The University Libraries has a one-month trial of this primary source collection available here on campus. The free trial access via IP is only available until March 27th.
The URL is: http://search.alexanderstreet .com/bord
The vendor description reads:
Border and Migration Studies Online is a collection that explores and provides historical background on more than thirty key worldwide border areas, including: U.S. and Mexico; the European Union; Afghanistan; Israel; Turkey; The Congo; Argentina; China; Thailand; and others. Featuring at completion 100,000 pages of text, 175 hours of video, and 1,000 images, the collection is organized around fundamental themes associated with border and migration issues.