The presidential campaign of former U.N. Ambassador Nikki Haley, made official Wednesday, marks the first primary challenger to former President Trump — to date, the only other candidate in the race — but is unlikely to be the last, as the former president's recent political losses have led to his weakened stance within the Republican Party. Sara Fagen, the former White House political director for President George W. Bush, and Brendan Buck, a former top adviser to House Speakers Boehner and Ryan, join Chuck to size up the GOP's budding "invisible primary."