The U.S. Justice Department has filed a federal lawsuit against an Arizona sheriff for civil rights violations after it says he and his office racially-profile Latinos.

Maricopa County Sheriff Joe Arpaio is considered the face of Arizona’s crackdown on illegal immigration according to reports. The Justice Department said in the suit filed May 10 that the crackdown is illegal.

“Leadership starts at the top and all of the alleged violations that are outlined in the complaint are the product of a culture of disregard for basic rights… that starts at the top and pervades the organization,” Assistant Attorney General for the Civil Rights Division Thomas Perez told reporters.

The Justice complaint says that in Arizona Latinos are five times more likely than non-Latinos to be stopped or searched and that detention of Latinos can be triggered by the failure of those stopped to maintain eye contact with officers.

Perez also said that his office wants a court-appointed monitor to ensure that Arpaio complies with the laws. According to the Tucson Citizen, Arpaio has rejected the monitor and its sweeping powers and said he will fight the Justice Department in court.

“We are not racist, we do not racial- profile. There’s no systemic proof of that,” Arpaio said. “Quite frankly, I’m happy (they sued).”

Arpaio continued to say this was a political ploy by President Obama to get the Latino vote in November.

Despite what he says though, this isn’t the first time he’s been investigated by the Justice Department. President George W. Bush’s administration also launched a probe into Arpaio’s office practices in 2008.

According to Reuters, a ruling on this case is expected in July.