![FCC issues historic $300 million fine against the largest robocall scam it has ever investigated](https://cdn.cnn.com/cnnnext/dam/assets/230804085901-phone-user-stock-super-169.jpg)
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The Federal Communications Commission on Thursday cracked down on a massive illegal robocall operation responsible for billions of auto-warranty scam calls in recent years, with regulators imposing a record $300 million fine on what authorities said is the largest such network it has ever investigated.