At least a third of landowners approached by state officials have refused to let wall be built on their properties. That's forced the state to largely build on ranchland in remote areas, or erect sections that are full of gaps.

The state of Texas has never publicly shared where it built its own border wall, despite spending more than three billion dollars of taxpayer money on construction so far. Today our news partners at "The Texas Tribune" are out with an in-depth report showing for the first time exactly where the state has built scattered sections of these barriers.

President-elect Donald Trump spoke against auctioning off parts of the U.S.-Mexico border wall. Days later, Texas politicians defended such calls.