Airbnb, which is raising money at a $30 billion valuation, is facing regulatory pressure from two of its largest U.S. cities, New York and its hometown San Francisco. Airbnb is suing San Francisco for passing a law that would fine the company for listing units that aren’t registered with the city. Airbnb argues the new requirements violate federal law and its First Amendment rights. Officials in New York and San Francisco are concerned that Airbnb is causing housing to be taken off the market, further crowding the limited supply in those cities. Critics argue that houses that would otherwise be rented out or sold are being listed on Airbnb instead, creating more space for tourists at the expense of residents. Airbnb had already booted 1,500 units off the platform in New York City in response to criticism, a spokesman said. Get the full story at Bloomberg