Google chief Sundar Pichai has faced accusations of political bias from US politicians.
Mr Pichai was being quizzed by members of the House Judiciary Committee about the way his tech firm runs it business.
Google was accused of having "programmed" bias against conservative views into its algorithms.
Mr Pichai denied the accusation saying he had "issues" with studies that claimed to show the firm's search results excluded right-wing views.
He was asked by Republican committee member Zoe Lofgren why, when she googled the word "idiot" under images, a picture of President Donald Trump came up.
In response, Mr Pichai explained that keywords were matched against billions of page results and ranked for relevance, popularity and how other people are using the word.