where they patrol constantly day and night. >> in 1986 they caught over 1.6 nillian people, the most ever. in 2016 just over 400,000 were apprehended, still one of the lowest numbers in decades. >> so i can see people watching this add home and say jacob is standing where there's no border fence. that's why we need a "donald trump border wall" that stretches across the country but what i hear you telling me is it's not necessary. >> we manage with what we have right now. it works perfectly. the infrastructure, technology and man power works for us right now. >> more documented mexicans are leaving the u.s. for mexico more than coming here quite frankly the economy here sucks if you're