Lawmakers leveled stinging criticism and sharp questions at Big Tech executives Tuesday, attacking Amazon, Apple, Facebook and Google for their market power, their perceived bias as gatekeepers of communication and Facebook's ambitions to reshape the financial industry.

The criticisms came at three hearings on Capitol Hill that showcased Washington's widening range of concerns with Silicon Valley. Lawmakers from both parties, including Sen. Ted Cruz, R-Texas, who oversees a subcommittee on the Constitution, and Rep. David Cicilline, D-R.I., who leads a subcommittee on antitrust law, took aim at the businesses.