On MSNBC’s Morning Joe, Mike Barnicle and Joe Scarborough react to Republican presidential candidate Donald Trump’s latest interview gaffes, including his comments on abortion and nuclear proliferation. “Donald Trump is an inch deep on every issue,” says Barnicle of Trump’s lack of serious knowledge on policy issues, which seems to have finally caught up with the candidate this week. Watch the conversation on Trump’s solo act, described by some as simultaneously the greatest and worst political campaign in modern American history.