Vice President Mike Pence administered the oath of office after the Senate voted Wednesday to confirm Coats.
Senator Coats expressed his gratitude for his family and years of service.
Most of the sparring was over terms like “establishment candidate” and “career politician:”
The senators say newspapers in the state have been using the term since 1826.
Coats, who is a member of the Senate Intelligence Committee, explains what he thinks the U.S. needs to consider in its next moves against the Islamic State.
The bill, which the president has threatened to veto, will soon head to Obama's desk.
Indiana Senators Coats and Donnelly are calling for VA Secretary Shinseki to release information about Indiana VA operations.
The U.S. Senate failed to pass a measure that would have increased the minimum wage to $10.10 per hour.
Sen. Joe Donnelly called Russia a 'thug-ocracy' and Sen. Dan Coats is introducing legislation to cut additional Russian/U.S. ties.
Coats is one of nine U.S. officials sanctioned by Russia.