Cook County Court Clerk Dorothy Brown joins "Chicago Tonight" to discuss losing her endorsement from the county's Democratic Party and an apparent federal investigation into her office. 

Cook County Board President Toni Preckwinkle won a victory Wednesday after the county board narrowly signed off on her controversial sales tax hike, but there might be some legal and political risks. We’ll talk with the Civic Federation president Laurence Msall and Nick Kachiroubas, an assistant professor at DePaul University’s School of Public Service.

Cook County Commissioners approved Wednesday a 1-percent increase in the county portion of the sales tax, which brings Chicago’s sales tax to 10.25 percent. President Toni Preckwinkle’s proposed penny-on-the-dollar sales tax was approved by a vote of 9-7.

The Cook County Board will soon vote on whether or not to increase the sales tax, as proposed by Cook County President Toni Preckwinkle. Cook County Commissioner Bridget Gainer and Cook County CFO Ivan Samstein join us tonight to share their thoughts on the proposed tax hike.

Cook County Board President Toni Preckwinkle sounds off on why she wants to raise the sales tax 1 percent. Will she have support from the board to do it?

Low-level drug offenders will no longer be prosecuted in Cook County. Instead, they'll be sent to treatment. Paris Schutz has more on a major shift in drug policy.

Amy Campanelli, a veteran attorney who's worked in the public defender's office for many years, has been confirmed as Cook County's newest public defender. We speak with Campanelli about her priorities for the office, which include reforming bonding to reduce the jail population.

A confirmed case of measles is reported in suburban Cook County. We have the details on what you need to know about preventing an outbreak.

Toni Preckwinkle is heading into her second term as president of the Cook County Board. She hopes to reform juvenile criminal justice and reduce the daily jail population, and has goals for the regional economy and public health. She joins us.

Cook County Sheriff Tom Dart gives Chicago Tonight an exclusive look at the jail's new Mental Health Transition Center.

How are Cook County health officials preparing for potential Ebola cases? Paris Schutz has the story.

Cook County Sheriff Tom Dart joins us to talk jail overcrowding, criminal justice setbacks, and what he calls the criminalization of mental illness in the state of Illinois and across the country. 

As Toni Preckwinkle gears up to keep her job as Cook County Board president, she is faced with a number of issues. We ask about some of her greatest challenges and where she plans to go from here.

Cook County Clerk David Orr has unveiled an online TIF mapping tool. He stops by Chicago Tonight to explain how the interactive tool works and more.

Petitions calling for limiting Illinois legislators’ terms and political redistricting hit a major road block that could keep them off the November ballot. 

A Cook County pension reform bill may be headed to Springfield. County officials say they are nearing a deal to solve the county's pension problem. Will it mean higher property taxes as well?