The investigation into whether the Trump administration pressured Alaska Senators Lisa Murkowski and Dan Sullivan over health care votes in July has been dropped by the Interior Department inspector general's office.
Interior Secretary Ryan Zinke reportedly called both Senators on July 27, one day prior to the Senate's 'skinny repeal' vote of the Affordable Care Act.
Senator Sullivan told reporters that the phone call held a 'troubling message'.
Deputy Inspector General Mary Kendall wrote that her office "does not believe it could meaningfully investigate the matter further".
Senator Murkowski and Sullivan declined to provide further statements or be interviewed in the investigation.