I'd add that implementing security "at the border" is the lightest touch option available and doesn't infringe on the rights of any citizens. But our leaders won't do it.
Instead they create the TSA to eliminate free travel and get access to our emails & phone calls to eliminate privacy.
Also, while I see both sides of the gun argument, it worries me that the government uses an obvious Islamic terrorist attack as an excuse to push gun control.
In fact, it's almost like our government doesn't mind terrorist attacks, because with every attack they have an excuse to infringe on more of our rights and expand their power.