An anonymous reader shares a report: Facebook will turn over copies of political ads purchased by Russian sources to congressional lawmakers, who are investigating the country's potential interference in the 2016 U.S. presidential election. Initially, Facebook had only released those ads -- 3,000 of them, valued at about $100,000 -- to Robert Mueller, the former FBI director who is spearheading the government's probe into Russia's actions. Facebook had withheld those details from House and Senate leaders, citing privacy concerns. But the move drew sharp rebukes from the likes of Sen. Mark Warner, the top Democrat on the Senate Intelligence Committee, who has charged in recent days that Facebook may not have done enough to scan its systems for potential Russian influence and to ensure that such foreign purchases -- otherwise illegal under U.S. law -- don't happen again. "After an extensive legal and policy review, today we are announcing that we will also share these ads with congressional investigators," wrote Colin Stretch, the company's general counsel. "We believe it is vitally important that government authorities have the information they need to deliver to the public a full assessment of what happened in the 2016 election."