http://www.businessinsider.com/obama-executive-action-on-inversions-warren-2014-8
The Obama administration said Tuesday it was reviewing potential administrative actions to limit stop companies' so-called tax inversion deals, after Sens. Dick Durbin (D-Illinois), Jack Reed (D-R.I.), and Elizabeth Warren (D-Massachusetts) sent a letter to President Barack Obama urging him to bypass Congress.
Most simply, tax inversions are mergers in which companies based in this case the U.S. acquire a country based overseas and shift their tax base, allowing them to enjoy a lower tax rate on profits made outside the U.S.
"Treasury is reviewing a broad range of authorities for possible administrative actions that could limit the ability of companies to engage in inversions, as well as approaches that could meaningfully reduce the tax benefits after inversions take place, to at least provide a partial fix," a Treasury Department spokesperson told Business Insider.
In their letter, the senators said the "growing trend in corporate tax avoidance" has created the need for immediate action.
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