Inside the IRS's probe into Facebook, including emails from 2008 where Sandberg and Ted Price, Facebook's head of tax, discuss tax havens for parking profits (Paul Kiel/ProPublica)

Paul Kiel / ProPublica:
Inside the IRS's probe into Facebook, including emails from 2008 where Sandberg and Ted Price, Facebook's head of tax, discuss tax havens for parking profits  —  The social media behemoth is about to face off with the tax agency in a rare trial to capture billions that the IRS thinks Facebook owes.