Pop, blues songstress and Untitled favorite, Elle King, dropped the music video for her latest single, "America's Sweetheart". This is the follow up to her mega hit, "Exes & Ohs" from her debut, certified gold album, LOVESTUFF. The music video was filmed at Moonlight Rollerway in Glendale, California, giving off retro vibes with roller skates, disco balls, and…