Moochelle orders tamali takeout!...
http://www.mysanantonio.com/news/politics/article/Obama-will-speak-on-immigration-next-week-in-El-1369634.php
Why they did it is obvious. They wanted to show that guns were being sent across the border and this would have given them an excuse to control guns tighter. Planted evidence at the scene of a crime. Oldest trick in the books.