Reporter: Should there be database that tracks the Muslims that are in this country?
Trump: There should be a lot of systems, beyond database. We should have a lot of systems and today you can do it. But right now we have to have a border, we have to have strength, we have to have a wall, and we cannot let what's happening to this country happen any longer.
Reporter: But that's something your White House would like to implement?
Trump: Oh, I would certainly implement that. Absolutely.
Reporter: What do you think the effect of that would be, how would it work?
Trump: It would stop people from coming in illegally.
Reporter: Would they have to legally be in this database?
Trump: They have to be--, they have to be--, the key is people can come to this country but they have to be here legally.
The reporter is asking about the database, but Trump is talking about his beloved wall, as his very next answer makes clear.Reporter: What do you think the effect of that would be, how would it work?
Trump: It would stop people from coming in illegally.