Meta, the social media giant, agreed to change the way children interact with its apps. That could be trouble if its competitors don’t abide by the same rules.
A legal dispute over the future of Kalshi, Polymarket and others has drawn in the Trump administration, the president’s son and nearly every state attorney general.
A 15-year-old using social media apps in Australia in July, more than half a year after the country had implemented a ban on children under 16 using many platforms.
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