All Sites Irish and shareholder eyes may be smiling at the prospect of medtech giant Medtronic acquiring Covidien and moving its headquarters to Ireland, where Covidien is based, but the $42.9 billion deal is causing at least a few frowns, as well. Minneapolis-based Medtronic is the largest U.S. read more

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Medtronic-Covidien deal: Medtech follows lead of technology companies seeking offshore tax breaks