A couple of fresh PDFs from CRS, via SecrecyNews.

• “Border Security: Immigration Enforcement Between Ports of Entry”  takes a look “recent enforcement efforts, takes stock of the current state of border security, and considers lessons that may be learned about a quarter century of enhanced migration control efforts at U.S. borders” and concludes “concludes by raising additional questions about future investments at the border, how to weigh such investments against other enforcement strategies, and the relationship between border enforcement and the broader debate about U.S. immigration policy.”
• “U.S. Unmanned Aerial Systems” looks at the nuts and bolts of unmanned vehicle programs whose costs have grown 11-fold since FY2000, to $3.3 billion in FY2010.