Still based on religion

I'm willing to bet that when Trump says  "areas of the world when there is a proven history of terrorism" he does not mean places like Colombia, notwithstanding its proven history of violence against civilians for political reasons. He might have taken religion out of the phrasing of the policy but it is still lurking in the background. 

When violence is committed by Muslims it is called "terrorism" (even when it is not--like when a U.S. soldier gets attacked while on duty in Iraq) and when non-Muslims commit violence that otherwise meets the definition of terrorism it rarely is called "terrorism." A lot of people have the idea that terrorism is committed almost entirely by Muslims because that's what we call any violence by a Muslim. (How many times do we have a shooting or bombing in the U.S. where the first question is "was it terrorism?"--a question that is ultimately decided based on the name of the perpetrator). I have no doubt that assumption would weigh heavily in Trump's decision-making when he decides what regions to ban immigrants from.