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By Amy Klobuchar

Ms. Klobuchar is a U.S. Senator from Minnesota.

There’s a centuries-old expression that “a lie can travel halfway around the world while the truth is still putting on its shoes.” Today, a realistic deepfake — an A.I.-generated video that shows someone doing or saying something they never did — can circle the globe and land in the phones of millions while the truth is still stuck on a landline. That’s why it is urgent for Congress to immediately pass new laws to protect Americans by preventing their likenesses from being used to do harm. I learned that lesson in a visceral way over the last month when a fake video of me — opining on, of all things, the actress Sydney Sweeney’s jeans — went viral.