>> we're a federally recognized tribe, tohono o'odham nation, and our enrollment has about 34,000 with approximately 2,000 of them living in what is now mexico. we traverse this what we call invisible border, the national boundary, daily, you know, for domestic, religious, and ceremonial purposes. >> what are your thoughts on suddenly someone says this is the border, if you're on this side, you're with these people and if you're on this side, you're with these people. >> yeah, when i first toured the border, i noticed there was a house on the u.s. side and the well was on the mexican side. >> so they got to go four miles to the north to get the water from the well and haul it back to their house. there is no plumbing. we have to go to the well and pump it into the barrels to take it back home. >> i mean, it's silly when you hear that. it just seems ridiculous. >> if they put up that wall, it's really going to make it difficult for us because now we