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As of 2017, about a third of the [[United States]] border with [[Mexico]] has a border barrier constructed along it.<ref name="FinancialTimes"/> About 80%<ref name="FinancialTimes"/> of that border wall was constructed due to the [[Secure Fence Act of 2006]] (Pub.L. 109–367).<ref>[https://www.gpo.gov/fdsys/pkg/PLAW-109publ367/html/PLAW-109publ367.htm 109th Congress Public Law 367]. ''GPO''. Retrieved August 26, 2017.</ref> [[Illegal immigration]] levels decreased in the areas where the wall was built.<ref>Binder, John (August 24, 2017). [http://www.breitbart.com/texas/2017/08/24/dhs-arizona-proves-border-walls-work/ DHS: Arizona Proves ‘Border Walls Work’]. ''Breitbart News''. Retrieved August 26, 2017.</ref> In Yuma, [[Arizona]], for example, illegal immigration levels fell by 82% between 2007, when the fence was first built, and 2017.<ref>[http://www.foxbusiness.com/politics/2017/08/22/trump-stops-in-arizona-border-town-where-illegal-immigration-plunged-82.html Trump stops in Arizona border town where illegal immigration plunged 82%]. ''Fox Business''. August 22, 2017. Retrieved September 9, 2017.</ref>

As of 2017, about a third of the [[United States]] border with [[Mexico]] has a border barrier constructed along it.<ref name="FinancialTimes"/> About 80%<ref name="FinancialTimes"/> of that border wall was constructed due to the [[Secure Fence Act of 2006]] (Pub.L. 109–367).<ref>[https://www.gpo.gov/fdsys/pkg/PLAW-109publ367/html/PLAW-109publ367.htm 109th Congress Public Law 367]. ''GPO''. Retrieved August 26, 2017.</ref> [[Illegal immigration]] levels decreased in the areas where the wall was built.<ref>Binder, John (August 24, 2017). [http://www.breitbart.com/texas/2017/08/24/dhs-arizona-proves-border-walls-work/ DHS: Arizona Proves ‘Border Walls Work’]. ''Breitbart News''. Retrieved August 26, 2017.</ref> In Yuma, [[Arizona]], for example, illegal immigration levels fell by 82% between 2007, when the fence was first built, and 2017.<ref>[http://www.foxbusiness.com/politics/2017/08/22/trump-stops-in-arizona-border-town-where-illegal-immigration-plunged-82.html Trump stops in Arizona border town where illegal immigration plunged 82%]. ''Fox Business''. August 22, 2017. Retrieved September 9, 2017.</ref>

[[Donald Trump]], who was elected U.S. President in 2016, promised to complete and build a wall along the United States–Mexico border in order to halt the flow of illegal immigration and slow the illegal import of drugs, firearms, and other materials. In 2016, the [[Republican Party Platform]] began calling for construction of the Border Wall.

[[Donald Trump]], who was elected U.S. President in 2016, promised to complete and build a wall along the United States–Mexico border in order to halt the flow of illegal immigration and slow the illegal import of drugs, firearms, and other materials. In 2016, the [[Republican Party Platform]] began calling for construction of the Border Wall. While [[liberals]] and [[establishment]] Republicans complain that building the wall will cost too much money, the [[Trump Administration]]'s January 2018 proposal of spending $18 billion to construct a wall would comprise only 0.0338% of the federal budget.<ref>Harper, Jennifer (January 10, 2018). [https://www.washingtontimes.com/news/2018/jan/10/trumps-border-wall-cost-is-00338-percent-of-federa/ Reality check: Cost of Trump’s border wall is 0.0338 percent of federal spending, says new analysis]. ''The Washington Times''. Retrieved January 10, 2018.</ref>

==See also==

==See also==