House Energy & Commerce Committee Chairman Henry Waxman and Commerce Manufacturing and Trade Subcommittee Chair G.K. Butterfield sent a letter to Apple on Wednesday, following complaints that a smartphone application dubbed Path was collecting address book data and storing it on remote servers without permission, reports “The Next Web.”

While Path has purported been tweaked to address the issue, Butterfield and Waxman have noticed that parts of Apple’s iOS developer website says Apple provides a comprehensive collection of tools and frameworks for storing, accessing and sharing data. So they wonder whether Apple requires apps to request user permission before transmitting data about a user, according to “The Next Web.”

Butterfield and Waxman have come up with a list of questions they want Apple to answer about all this. You can find the questions at .