NBC's Mark Potter answers questions on border security and immigration

With a bipartisan group of senators expected to unveil immigration-reform legislation in the next few days, there are many issues at stake. Security along the U.S.-Mexico border has been one of the most thorny issues for immigration reform.

NBC News' Mark Potter has done extensive reporting along the U.S.-Mexico border. He answered reader questions about border security earlier today.?

Click on the box below to replay the informative chat.

Related links:

Through the obstacle course of immigration, many paths to citizenship

First thoughts: Why immigration reform has a better chance than guns

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