Investors brace for impact, again, with huge new tariffs on China just hours away, and higher prices soon to follow. At midnight, the tariff on goods imported from China will rise another 50%, to a staggering 104%. Also, at midnight, Canada's 25% tariff on American-made cars begins, which is retaliation for the President's corresponding 25% levy on Canada imposed last week. Democratic Sen. Elizabeth Warren, who sits on the Finance Committee and is the ranking member on the Banking Committee, talks to Anderson about the state of the economy. Plus, Dr. Sanjay Gupta shares the findings of a new study on Alzheimer's that he's a part of. The results are startling, and good news.

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