An unspoken sin not addressed by pro immigrant advocates is the yearly waste and destruction illegals leave behind in the form of trash and human waste. The taxpayers in Southern states and on federal level get the bill for the cleanup according to Judicial Watch:

Each year illegal immigrants leave behind an estimated 2,000 tons of trash—including soiled diapers, plastic bottles and abandoned vehicles—in public Arizona lands along the border.
Getting cleanup crews and equipment to these increasingly remote portions of the desert is, not only tough, but also hazardous. Camp sites set up by illegal immigrants and drug smugglers are the most difficult to clean up.

How much does it cost to clean up?

This so-called “landfill fee” ranges from $37 to $49 per ton in southern Arizona and that doesn’t even include costs for materials, equipment, labor and transportation.

2007 financial report for the state of Arizona titled “The Southern Arizona Project To Mitigate Damages Resulting from Illegal Immigration”. In the report, clean up costs over a span of 5 years totaled $4.4 Million. Damage caused by illegals each year is just not trash but also infrastructure and national monuments in parks located on these corridors they travel on.