Paris Hilton and Caroline Cole of Breaking Code Silence returned to Salt Lake City for a ceremonial bill signing for a law that regulates treatment centers for troubled teens in Utah. The legislation for facilities that treat teens with behavioral and mental health issues gained final approval in the Legislature in early March, about a month after both gave emotional testimony in support of the bill. Gov. Spencer Cox signed the bill last month but held a ceremonial signing with Hilton and Lorson. The new law will require more government oversight of youth residential treatment centers and documentation for when they use restraints. It will also prohibit treatment centers from using sedation or mechanical restraints without prior authorization.