Apparently, the shooter was reported as a "suspicious person" to the local authorities an hour before the shooting.

The head of the Secret Service is getting hammered by reporters and is stonewalling every question.

It wasn't clear if multiple Congressmen were starting committees to investigate this, or if they were joining up on a single committee.

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If you don't think what you're proposing is even likely, then why propose it? I'm with oskar on that one.