Are there any works that discuss the permissibility of reading secular newspapers on a weekday? The Ketzos HaShulchan (Badei HaShulchan 107:43) holds that it's forbidden: Other [i.e. not Torah] ...
I don't have the book myself, but I believe it is called To Touch Kindle a Soul, on chinuch. It contains, in the endnotes a reference to a letter written by Rav Moshe Feinstein zt'l, Rav Shach zt'l, ...