Friends on Facebook, when they aren’t comparing Donald Trump to Adolf Hitler, may complain that Trump’s proposal to build a wall along the U.S.-Mexico border is un-American and/or immoral. Yet Wikipedia indicates that we have already built 580 miles of such a wall. It seems obvious that Trump is proposing a longer wall, but how is that qualitatively or morally different than what we’ve already done? With a quick Google search I found “History of Border Walls in the U.S. and Around the World,” which says that the Mexico-U.S. wall dates back at least to 1990:
In 1990, the United States constructed a 66-mile (106-kilometer) fence along the California coast from San Diego to the Pacific Ocean to deter illegal immigration. Arrests of illegal immigrants in the San Diego region declined sharply as a result of the fence, but increased nearly 600 percent in Arizona, where the number of accidental deaths also climbed as Mexicans attempted to traverse the harsh desert environment.
In 1996, President Bill Clinton signed the Illegal Immigration Reform and Immigrant Responsibility Act. The act increased fines for illegal aliens, provided additional funding for border patrol and surveillance, and also approved the installation of an additional 14-mile (22-kilometer) fence near San Diego.
With respect to his advocacy of a border wall/fence, what is different about Donald Trump than our 1990s political leaders?