I don't believe all the opposition to the wall is all in error.  The wall is being sold as the super solution to an issue with multiple problems.  The wall is a partial solution that has to have other things working with it.  Trump is playing to the audience with The Wall as how to end illegal entry.  Yet many of the illegals are here here after coming into the country legally and never leaving. The wall alone is not going to find all those who should be removed nor is it stopping the employers who continue to hire illegals.