White House press secretary Karoline Leavitt has previewed President Donald Trump and first lady Melania Trump's guests, as well as the key agenda items the president will focus on during Tuesday night's State of the Union address. "The first lady will have two great children with her as part of her Fostering the Future initiative," Leavitt told Fox & Friends Tuesday morning. "The president himself has invited some extraordinary guests this year who, again, truly exemplify what it means to be a patriotic American. Men and women who have served in our United States military."...