Fox News Channel will debut a new weekend programming lineup beginning Saturday, Sept. 20, FOX News Media President & Editor-in-Chief Jay Wallace announced on Wednesday. "Outnumbered" co-host Kayleigh McEnany will begin hosting her own program "Saturday in America" at 10 a.m. ET on Saturdays, while Griff Jenkins will join "FOX & Friends Weekend" as the third co-host alongside Rachel Campos-Duffy and Charlie Hurt.