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This year's must-have Silicon Valley office accessory: a $199 bear costume
By Bruce Einhorn
Among the thorny issues President Barack Obama faces this year is immigration reform. The current system of managing immigration flows into the U.S. is widely acknowledged to be failing, with some 11.5 million undocumented workers in the country, according to the Pew Hispanic Center. President Obama wants to turn many of these illegal immigrants into citizens, but the shaky economy and high unemployment rate make such liberalization of policy a hot-button issue. This despite the fact that immigrants run many of the top companies in the U.S. Here's a look (arranged in alphabetical order) at some of the men and women who left their home countries and went on to become some of the world's most successful corporate leaders.