California lawmakers made their fashion ruling: Crocodile handbags were out. Alligator boots, too. But for Louisiana, the nation’s top producer of all things made from alligator skin, those were fighting words.

The state’s attorney general filed a federal lawsuit earlier this month to stop California’s ban on alligator and crocodile products from taking effect in 2020. Last week, a federal judge agreed to temporarily block the new law, meaning Louisiana and California are headed for a showdown in court.

Every year on Jan. 1, hundreds of new state and federal laws take effect across the country. Many are mundane, but some can be contentious — and not just in the world of fashion.

As 2020 arrives on Wednesday, Arkansas will ban state-funded human cloning, while Illinois will legalize marijuana. Texas will try to save lives in school shootings, but not by taking action on guns. Here’s a look at changes coming across the country.