Muslims represent 1/7 people across the world and actually have a lower chance of being a terrorist than White Americans. North Koreans are banned from entering the country not because of fears of terrorist attacks but instead to limit their technology and economical power as a punishment for their aggression. If Donald Trump wanted to ban ISIS members from entering it would be one thing. But banning 1/7 people for something that causes no more terrorism than Christianity is just silly.
What an irony? Do you really think that White non-Hispanic Americans are more at a risk of perpetrating terrorist attacks when compared to Muslims? I don't think so. Also, I have never heard of North Koreans committing any terrorist attacks, either inside or outside their country. The reason why Trump want to ban Muslims from entering the United States is due to the fact that 99.99% of all the terrorists in the world are Muslims.