FULL TITLE: Marco Rubio Campaign in Disarray as Questions Forcibly Surface About His Viability as Presidential Candidate ----- The presidential campaign of Sen. Marco Rubio (R-FL) is in disarray as the first-term Florida Senator’s window of opportunity for the White House seems to be slamming shut. Questions about his supposed viability as a presidential candidate forcefully surface, even inside his own inner circle, amid horrendous performances by the establishment-backed candidate. CNN’s Jamie Gangel and Tal Kolpan reported late Monday: A battle is being waged within Florida Sen. Marco Rubio’s campaign about whether he should even remain in the Republican presidential...