Tracking Aliens The United States lacks a system to track foreigners after they enter to make sure they stick to the terms of their visas. NPR's Larry Abramson reports.
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Tracking Aliens

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Tracking Aliens

Tracking Aliens

Tracking Aliens

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  • <iframe src="https://www.npr.org/player/embed/1134633/134633" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

The United States lacks a system to track foreigners after they enter to make sure they stick to the terms of their visas. NPR's Larry Abramson reports.