"We’re going to build a wall.” Borders have been drawn since the beginning of time, but in recent years artificial barriers have become increasingly signifi

Border security has been high on public-policy agendas in Europe and North America since the September 11, 2001 attacks on the World Trade Centre in New York Ci

This report describes for the first time the totality and evolution since the mid-1980s of the current-day immigration enforcement machinery. The report's key f

This report offers research and recommendations on ways to measure the overall efforts of the national border-security enterprise between ports of entry. Focusi