Chief Justice Roberts of the Supreme Court has denied a request to temporarily delay the ban against bump stocks this week. Another request on the delay was still pending approval from Justice Sonia Sotomayor.
The Justice Department and Trump Administration had initially banned bump stocks back in December, with the law taking effect on Tuesday. On Monday, the Supreme Court was considering an emergency request from multiple gun rights groups including Gun Owners of America, Gun Owners Foundation, and the Virginia Citizens Defense League to delay the ban while some cases challenging it go through the appeals process.
Initial efforts to ban bump stocks were jump-started when they were used in the Las Vegas mass shooting in October of 2017 that led to 58 deaths and hundreds wounded.