Rachel Maddow and other top MSNBC hosts have been using an LED screen to cover the Republican National Convention in Milwaukee from the liberal network's studio in New York City, according to a report. Maddow, who has been leading the network's coverage of the GOP convention this week, has repeatedly appeared on air with the backdrop of the convention behind her, leading casual viewers to assume she was on the ground in Milwaukee. But Maddow and many of her colleagues, including Nicolle Wallace, Jen Psaki, Joy Reid and other MSNBC anchors have not been inside the convention hall or even...