There is good reason for us to control our borders. We should know who is in our country. But this issue should be studied. In some locations, a physical wall is nothing short of ridiculous. In other places, it may have the impact we want on illegal entry into the country , but it may also impede animal migration patterns or cause drainage problems. Some land owners aren’t interested in having a wall go through their property. I think it’s ok for us to take the time to study the problem to find out what technology we should and/or can use at which locations that would be best for border control without doing environmental harm or causing property values to go down. In failing to study the problem, we may answer one “national emergency “ by creating another.