The Department of Justice is going to be looking closely for signs of collusion, at exclusivity agreements, and at acquisitions, Makan Delrahim said.
According to the report, Google will be investigated by the Justice Department over its search and other businesses.
"I hope and expect this will be the only time I will speak to you in this manner," Robert Mueller said Wednesday.
Democrats on multiple House committees want to haul in the special counsel Robert Mueller to testify on his findings in the Russia investigation.
If the contempt charges advance, Barr could face lofty fines or even jail time.
Speeches and statements from Mitch McConnell, Chuck Schumer, Nancy Pelosi, and Elizabeth Warren showed the Mueller report fight is in full swing.