Shark Tank star and investor Kevin O'Leary says that despite the recent stock volatility the "American core economy is on fire like it was in the 60's and if we get a deal done with China, Katy bar the door!" Shark Tank star and investor Kevin O'Leary says that despite the recent stock volatility the "American core economy is on fire like it was in the 60's and if we get a deal done with China, Katy bar the door!"