Now Playing: 3-11-13 Marketplace Morning Report

Michael Dell's plan to buy his computer company back from shareholders is turning into a bit of a challenge. At least one major shareholder, Carl Icahn, is saying shareholders should get more out of the deal. China's government says it plans to strip power away from the agency that oversees the country's controversial one-child policy. Observers say this could spell the beginning of the end for the rule. And over the weekend, Mariano Rivera announced his retirement from the New York Yankees. We take a look at how his career changed the game for Major League Baseball.