Editing Separation barrier (section)

===United States===
{{Main|Mexico–United States barrier}}

[[File:US-Mexico border fence.jpg|thumb|right| A barrier along the US-Mexico border. A US Border Patrol watches the barrier.]]

The [[United States]] constructed a barrier on the [[U.S.-Mexico border|border]] with [[Mexico]] of {{convert|3169|km|mi}} to prevent unauthorized immigration into the United States and to deter smuggling of contraband. The US [[President Trump]] stated that he would replace the wall with an updated [[Mexico–United States border wall]]; some parts of the old wall have been replaced.<ref>{{Cite news|url=https://www.bbc.com/news/world-us-canada-46824649|title = Trump wall: How much has he actually built?|work = BBC News|date = 31 October 2020}}</ref>

The [[Detroit Wall]] was erected to enforce [[redlining]] as part of the policies of [[racial segregation in the United States]].