I think you will find this isnt much of an obstacle in this case
@Foxi
There is already fencing and a wall present in many places along the US Southern border.. For example along many miles of the border near El Paso TX, SanDiego, CA, and other places there is already a wall, to include on land that is privately owned. It has been constructed over the course of years as part of the 2006 Secure Fence Act.. What we are talking about now is really just a bigger, more difficult wall to scale or dig under, etc..
Easements have long been in place where a wall is already present.. There is no legal battle to be fought with the land owners in many locations..
There are certainly places where the US government would have to go through the "eminent-domain" process to obtain access to other parts of the border.. but there are plenty of places to get the project started while that occurs where access is already taken care of.. The US Government could literally start building tomorrow at all of the locations (many, many miles) where access rights have already been obtained and stay busy for a few years while they wait out eminent domain elsewhere..
Much of what is being seen in the media, both domestically and internationally is not much more than political grandstanding.. Just last March congress funded an additional 33 miles of wall to be built on the TX border with Mexico in addition to what has already been in place since 2006...
Its not like a significant portion of the US border with Mexico doesnt already have a wall... a wall has been in place for over a decade.. and both democrat and republican administrations have funded section of border wall previously..
A company I worked for previously held a significant contract along manning security posts all along the southern border while sections of not only border wall, but also electronic sensors and other equipment was being installed from 2007-2010.
The current media BS, racism accusations, etc..etc.. is just more bread and circuses from our politicians and our media outlets..