Yes, they should. Temporary ban on people entering from these countries until a more thorough vetting process is in place.
Common sense - finally.
I never understood the mentality.
It started in the Bush administration after terrorists crashed into the WTC.
The first question: who did that?
The answer: Moslems.
The response: We need to bring as many of them over here as possible.
A permanent ban would make more sense. Why invite the enemy to live in your house?