Things we know so far...
- Terrorist was a Muslim immigrant
- Terrorist had been here as an immigrant for 7 years
- Terrorist used legal weapons available to legal immigrants to kill his victims
NBC reports, "Not only is this type of thing hard to prevent, it's impossible."
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It's not impossible. The increased vetting and possible immigration ban that has been beaten down by bleeding hearts is the only answer to this. You stop the bad guys from coming over. It's that damn simple. Americans first. To hell with "refugees". They are not our responsibility.