Chicago mom of murdered teen wins fight against online sex trafficking

It was a bittersweet celebration Wednesday for a Chicago mother who fought online sex trafficking.

Desiree Robinson was just 16 when she was found dead in a garage in Markham in 2016. She had been advertised as a prostitute on 

Her mother, Yvonne Ambrose, launched an all-out war against She filed a lawsuit and testified in Washington.

On Wednesday, she was at the White House when President Trump signed a bill targeting websites that promote sex trafficking.

The new law weakens a shield some online companies used claiming they were merely third-parties and not responsible for content posted by sex traffickers.