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Among signers of the statement were Donald Ayer, who was the Justice Department's No 2 official under Republican president George H.W. Bush, and Bill Weld, a former head of the Justice Department's criminal division under Republican president Ronald Reagan. Weld is making a bid to challenge Trump for the 2020 Republican presidential nomination.

Amazon’s treatment of third-party sellers was clearly at the center of the House’s inquiry and will almost certainly factor in a separate investigation that the Federal Trade Commission is conducting. The House does not have the authority to enforce antitrust law but the hearing does hint at the evidence that is being collected and shared with the FTC and other regulators.

Amazon’s first physical bookstore opened this past November in Seattle.

Amazon’s?worldwide headcount is also on the rise, as the chart below shows. The company actually?topped 91,000 employees at the end of the first quarter, and likely will top Microsoft in worldwide headcount this quarter, though a large percentage of that employee base works in fulfillment.

Americans studying abroad spent .6 billion on education, according to the year cited in the IIE report. That means the US ran a trade surplus in education, one of the largest of any industries.