https://arstechnica.com/tech-policy/2018/07/fcc-will-now-take-your-comments-on-whether-to-allow-t-mobilesprint-merger/

The Federal Communications Commission will accept petitions from now until August 27 to deny the $26 billion T-Mobile USA/Sprint merger, the commission announced yesterday.

Petitions to deny—as well as less formal comments—can be submitted online at the FCC's docket page. Recent filings can be found here.