Walls are very important when you`re separating two urban areas where if you`re actually able to get over the border you can probably get into the underground network in about 30 seconds. But when you`re out in the middle of the desert, it makes no sense because you have border security people have up to a day to apprehend people who are crossing illegally.

Leading is not hypothetical debating; it's about solving real problems.

I have a treasure trove of Baker memories, all of which reinforce my sense of Howard Baker as one of the most decent people with whom I have worked. While I was simply a young staffer, he never treated me or my colleagues as anything else but equals.

I was part of the gang of eight in the house in 2013 that was working on comprehensive immigration reform. We talked a lot about border security and what was effective and what was not. Walls are not effective when you`re out in the desert and you don`t need them.

The only thing I heard Speaker [Paul] Ryan say that made sense was, we actually really need to look at this and see what makes sense and what doesn`t, because electronic detection in those kind of - and drones and other types of border protecting devices seem to be much more effective in certain places.

He [Donald Trump]wants to build the wall. It would be silly to say we`re going to - we`re going to create an army and we`re going to have Mexico pay for our border patrol, our border police. Clearly, that`s not going to happen.

Walls are very important when you`re separating two urban areas where if you`re actually able to get over the border you can probably get into the underground network in about 30 seconds. But when you`re out in the middle of the desert, it makes no sense because you have border security people have up to a day to apprehend people who are crossing illegally.