https://apnews.com/0582eebb50cd2e85dde8cb30fcde2967 > WASHINGTON (AP) — Congressional lawmakers finally got a chance to grill the CEOs of Big Tech over their dominance and allegations of monopolistic practices that stifle competition. But it's unclear how much they advanced their goal of bringing some of the world's largest companies to heel. > Invective flew Wednesday as legislators questioned Facebook’s Mark Zuckerberg, Amazon’s Jeff Bezos, Google's Sundar Pichai and Apple's Tim Cook at a hearing of the House Judiciary subcommittee on antitrust. For the last year, that panel has probed the business practices of the Silicon Valley giants with an eye to determining if they need to be regulated more heavily or even broken up.