In July, the US House of Representatives will question executives from Apple, Alphabet (Google's parent company), Amazon and Facebook over allegations that the companies violate the country's competition laws.
As far as Apple is concerned, the App Store is the primary issue: a number of developers have criticised the company for its insistence on takin a 30% cut of revenue from all subscriptions. Most complaints have come from Spotify, whose boss has said that Apple's platform is not yet 'open and fair'.
If one of the companies doesn't participate in the hearings or refuses to disclose requested information about their business, there may be lawsuits, MacRumors reports.
This article originally appeared on MacWorld Sweden. Translation by David Price.