In this week’s Marketplace “Tech Bytes: Week in Review,” TSMC announced it’s investing an additional $100 billion to make chips in the U.S. Plus, a co-founder of the social media platform Reddit joins a bid to buy TikTok. But first, let’s talk about the stock market. A number of tech companies watched their stocks sink this week, when new tariffs on China, Mexico and Canada were put in place. That volatility continued when President Donald Trump backtracked on the policy, at least temporarily. Marketplace’s Stephanie Hughes spoke with Natasha Mascarenhas, reporter at The Information, to unpack these stories and more.

Today, we’re wrapping up our series “The Infinite Scroll,” where we look at kids’ lives on social media and the risks and rules they face. One approach some states take to creating rules to mitigate risk is known as an age-appropriate design code, a law that puts the onus on tech companies to design products that keep kids safer when they’re on the internet. California passed its Age-Appropriate Design Code Act in 2022, as did Maryland last year. Both have been challenged by lawsuits from the tech industry. State Delegate Jared Solomon, a sponsor and lead author of the Maryland law, explained to Marketplace’s Stephanie Hughes that the oversight effort attempts to prevent manipulation by algorithms. He hopes the industry will begin to “think differently about how they design their products.”

On our new series “The Infinite Scroll,” we’re looking at the rules and risks of kids using social media. Artificial intelligence is showing up on these platforms in the form of chatbots, digital characters you can text or talk with. Today we explore what can happen to youngsters who interact with them. Marketplace’s Stephanie Hughes discussed the subject with Meetali Jain, founder and director at the Tech Justice Law Project. Her organization is involved in a lawsuit against Character.AI, an app that enables users to create and communicate with these bots.