Obama announces in Mitchell, South Dakota that he telephoned Clinton Sunday to congratulate her on winning the Puerto Rico primary.
Land of Lincolner then praises Clinton to crowd outside the Corn Palace for the race she has run and her public service.
"She is going to be a great asset when we go into November to make sure we beat the Republicans. That I promise you. Whatever differences Senator Clinton and I may have, those differences pale in comparison to the other side."
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