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Now Playing: 1-28-13 Marketplace

As the debate heats up over reforming immigration laws, Krissy Clark reports on the role played by the 11 million undocumented immigrants in the nation's economy. Retailers now can charge extra when they swipe a credit card. The Library of Congress has special powers when it comes to deciding how you use your cell phones, tablets and other technology. New York Times television reporter Brian Stelter talks about the Los Angeles Dodgers' new channel and whether the cable TV financial model will change anytime soon. There's a plan to build a new library in San Antonio, Texas -- that holds no books. And reporter Peter O'Dowd explains why he didn't give up his underwater home.