decades defending that. >> reporter: ben carson saying it sets a dangerous precedent to single out a group of people, instead calling for a database of everybody that enters the u.s. >> i want everybody to have a database. i want us to know about anybody that comes into this country. >> reporter: that after he raised eyebrows comparing refugees to rabid dogs. >> if there's a rabid dog running around in your neighborhood, you're not going to assume something good about that dog. doesn't mean you hate all dogs. >> reporter: cruz has proposed to let syrian christians into the country but not muslims. >> we would need to vet anyone coming in, but there's no indication of muslim s pretendig to be christians. >> reporter: a new poll from "the washington post" and abc news shows that a majority, 54%