a safe environment for state officials, employees, and the general public. The Capitol District provides total police service within the Capitol Complex, including traffic enforcement, parking enforcement, and criminal investigations. Texas Rangers Arguably the most well-known division of the DPS is the Texas Ranger Division, also known as Los Diablos Tejanos (). The Texas Rangers are responsible for state-level criminal investigations, among other duties. The Texas Ranger Division consists of 166 sworn Rangers. Mounted Horse Patrol Unit The unit was established in 2014 to patrol the State Capitol Complex. The MHPU is a component of the THP Division, and functions in coordination with other patrol units within the Capitol Region and other law enforcement agencies. The mission of the MHPU is to enhance our community policing efforts by providing a positive interaction within our community and those visiting the Capitol Complex. Members will also provide a highly visible and effective patrol and security function in suppressing civil disturbances, as well as deterring terrorism and criminal activity. 2010 corruption investigation In 2010, Texas Department of Public Safety (DPS) Trooper Mark DeArza, 39, of Houston, and DPS clerk Lidia Gutierrez, 37, of Galena Park, Texas, were convicted of conspiring to sell Texas driver's licenses to unqualified applicants for a fee after pleading guilty to the charge before United States District Judge Gray Miller. According to the FBI public record of the case, the FBI learned through a confidential source of information (CS) that the operator of a Conoco station located on Almeda-Genoa Street in Houston was allegedly selling Texas driver's licenses for a fee. On two separate occasions, first on May 14, 2010, then again on July 26, the CS met with the operator of the gasoline station, and allegedly paid him $3000 for assistance in obtaining a Texas driver's license, and $3500 for assistance with obtaining a commercial driver's license for a friend. In the first instance, the CS was referred to and met with DeArza at the DPS office on May 17, 2010, and with his assistance and that of Gutierrez, obtained a Texas driver's license which he was unauthorized to receive. In the second instance, the CS sought a commercial driver's license for a friend. The CS allegedly paid $3500 for the arrangements to be made with DeArza and Gutierrez to obtain this driver's license as well. On July 26, 2010, at the gasoline station, the CS received a