Rose Byrne, Sarah Paulson, John Slattery, Uzo Aduba, Ari Graynor, Melanie Lynskey, Jeanne Tripplehorn, James Marsden, Margo Martindale, Kayli Carter and Tracey Ullman are boarding the limited series “Mrs. America.” These actors will be joining Cate Blanchett in her first U.S. TV show, which has been set on FX.