Minnesota Public Radio slideshow:
Civil liberties groups fear travel "surveillance"
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Passengers are used to submitting baggage and clothing to detailed screening. But when it comes to a proposed system to screen the personal information of passengers, things get more complicated. (MPR Photo/Jeff Horwich)

Passengers are used to submitting baggage and clothing to detailed screening. But when it comes to a proposed system to screen the personal information of passengers, things get more complicated.

(MPR Photo/Jeff Horwich)
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