[JURIST] Many new state laws [NCSL press release] took effect on Sunday, including measures to safeguard against child sex offenders and the misuse of personal information. Michigan strengthened [summary] its sex offender laws, and Illinois banned human trafficking, allowing state law enforcement to prosecute such crimes. Louisiana and Michigan now require companies to notify state residents when they believe personal information has been compromised, following several high-profile identity theft cases [JURIST report], including ones involving LexisNexis and credit card companies [JURIST report]. An Illinois law [text] banning [JURIST report] the sale of violent video games to minors was set to take effect January 1, but was struck down [JURIST report] in December by a federal judge as an unconscionable violation of free speech. AP has more.