Illinois AG sues Chicago over police reforms

Illinois Attorney General Lisa Madigan sued the city of Chicago Tuesday, asking a federal court to stop the city's police department from engaging in what the suit calls a "pattern of using excessive force" and other discriminatory misconduct against Chicago's African-American and Latino residents.

Madigan announced the lawsuit at a news conference Tuesday afternoon alongside Chicago Mayor Rahm Emanuel.

Emanuel was in the process of working with the Justice Department on police reforms at the end of the Obama administration, but has been in a stalemate thus far with Attorney General Jeff Sessions on how to move forward.

"The reforms we have made in recent years, and those that lie ahead, will help us ensure Chicago has the most professional, proactive police department possible," said Emanuel. "I am proud that Illinois' attorney general is standing up -- for our city and our officers -- where the Trump Justice Department fell flat."

The lawsuit documents two damning reports on the Chicago Police Department, saying "that CPD has continued to engage in a repeated pattern of using excessive force and racially discriminatory policing practices."

Sessions has expressed great skepticism of federally-mandated police reform measures since taking office in February, especially the use of consent decrees, and to date has not moved on the city's efforts to implement one in Chicago.

The Justice Department said in a statement to CNN Tuesday that "local policing is first and foremost a matter of local responsibility."

"If the city and state can put in place policies and practices to ensure constitutional, proactive policing that actually serves to reduce Chicago's rampant violent crime problems, that would be a positive step," said DOJ spokesperson Ian Prior. "However, we have said repeatedly that we will not agree to or support any measure that will endanger the lives of Chicago's residents or law enforcement by eroding the rule of law or by failing to properly address violent crime in Chicago. We will continue to work with the city to meet those goals."

Madigan specifically asks that the court appoint an independent monitor to oversee Chicago's implementation of the new policies and procedures and to report back to the court.