Dozens of Facebook lobbyists tied to members of Congress, investigation shows

Lobbyists worked for 29 current members of Congress, including Democratic party leaders, helping promote company's interests

As tech giant Facebook grapples with congressional hearings over its policy allowing politicians to sponsor untruthful ads and its role in proliferating hate speech, dozens of its lobbyists have connections to members of Congress, likely giving them special access that helps them promote the company's interests.