More details are known about the tragedy, prompting questions about mental health, campus safety, and guns.

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With an average of about 81 people a day killed by guns in the US, this issue is much, much bigger than Virginia Tech. That Congress has allowed the assault-weapons ban to expire and that it refuses to track gun sales in a way that would pinpoint dealers selling to criminals, shows a greater concern for the gun lobby than for the American public. This is one area of review that shouldn't stop with the specifics of Virginia Tech.