Mexicali Mayor Norma Bustamante said Tuesday the city plans to increase the number of enforcement operations to inspect downtown in the ports of entry.
The mayor said complaints against those who offer cleaning vehicles and illegal merchants have increased.
Although the city recorded a decrease in complaints the issue has consistently increased.
A vehicle cleaner was killed months ago after an argument with a driver.
The Mexicali Police, along with other city staff and Mexican authorities, held an enforcement operation to detect illegal merchants in the area.
The mayor warned that operations to remove unregistered merchants will continue.
Merchants without a permit can be fined by the city with $100. Mayor Bustamante asked merchants to apply for permits with the city in order to avoid removal and fines.