Sen. Ron Wyden details the largest publicly known location-driven anti-abortion ad campaign, which allegedly tracked visits to 600 Planned Parenthood locations (Alfred Ng/Politico)

Alfred Ng / Politico:

Sen. Ron Wyden details the largest publicly known location-driven anti-abortion ad campaign, which allegedly tracked visits to 600 Planned Parenthood locations  —  The details in Wyden’s letter, sent Tuesday morning, reveal what’s believed to be the largest publicly known location-driven anti-abortion ad campaign.