NEW: Karoline Leavitt speaks out ahead of her last day as White House press secretary. "It's a little bit bittersweet. It's bitter because I'm leaving a job th

NEW: Karoline Leavitt speaks out ahead of her last day as White House press secretary. "It's a little bit bittersweet. It's bitter because I'm leaving a job that I love so very much, and it's been the honor and blessing of a lifetime to work for this president, President Trump. There will never be …