Wojcicki played a key role in Google’s creation and served nine years as YouTube's CEO, stepping down last year to focus on her "family, health, and personal projects I’m passionate about,” she said at the time.

By Ken Miller, Mae Anderson, Associated Press

In a letter sent Tuesday to YouTube CEO Susan Wojcicki, the House Oversight and Reform subcommittee on economic and consumer policy says YouTube isn't doing enough to protect kids from material that could harm them.

By Barbara Ortutay, Associated Press