Trump's Mexico Wall in a World Divided by Walls

Starting in the 1950's, after World War II, and then following 9/11 and the rise of terrorism, the building of border walls has surged, as noted by the following graph from the Migration Policy Institute:

Currently, Saudi Arabia is building a 600-mile wall along its border with Iraq to keep ISIS out.  Another nearly 600-mile wall is being built by Turkey to keep Syrian refugees from overrunning its border.  Spain has an expansive wall to stop Moroccans from entering.  Walls also exist between India and Pakistan; South and North Korea; India and Bangladesh; and the list goes on.

Decades ago, the poet Robert Frost wrote 'Mending Wall'.  The poem opened with the line "Something there is that doesn’t love a wall" and also contained these words: "Good fences make good neighbors". Many falsely believed that Frost was arguing for the building of walls.  However, 'Mending Walls' was actually an anti-wall literary work.  Take this line as an example: "Before I built a wall I’d ask to know what hat I was walling in or walling out, And to whom I was like to give offense".

Those last words could be no truer then now.  Trump's wall with Mexico is obviously being built with the intent of  "walling out" illegals, drugs, and gangs coming in via Mexico.  But, there is a cost in that -- like the poem states -- the wall "was like to give offense" to our neighboring country, Mexico.

To me, walls are ugly divisions among societies.  A major 1800 mile wall on our southern border would be just that. I would prefer to use existing laws to crack down on employers who attract illegal aliens into the country for employment.  We should also change our immigration laws, so that legal, migrant workers can enter.  These two changes would greatly reduce work for illegals, and, as we saw during the Great Recession, many returned home due to the lack of jobs.  Also, by this point, we should be able to use technology in order to avoid the building of an actual physical wall.  Just my opinion.

References:

Source of Graph: http://www.migrationpolicy.org/article/borders-and-walls-do-barriers-deter-unauthorized-migration

Saudi Arabia Constructing 600-Mile Wall To Keep Out ISIS: http://www.newsweek.com/saudi-arabia-constructing-600-mile-long-wall-keep-isis-out-299664

These 14 walls continue to separate the world: https://www.washingtonpost.com/news/worldviews/wp/2014/11/11/these-14-walls-continue-to-separate-the-world/?utm_term=.52efeff1681d

Turkey-Syria border wall completed by half: https://www.dailysabah.com/war-on-terror/2017/02/26/turkey-syria-border-wall-completed-by-half

Robert Frost's 'Mending Wall': https://www.poets.org/poetsorg/poem/mending-wall

More Mexicans Leaving Than Coming to the U.S. | Pew Research: http://www.pewhispanic.org/2015/11/19/more-mexicans-leaving-than-coming-to-the-u-s/