10 things you need to know before the opening bell

Here is what you need to know.  1. Hong Kong Stock Exchange just proposed a $37 billion deal to buy the London Stock Exchange. Together, the two stock exchanges would be worth more than $70 billion. 2. China removed tariffs from 16 American exports including cancer drugs, fish food, and certain chemicals. Ranchers are still going to feel the pain as farm produce continues to face levies.  3. California just passed a bill turning 'gig economy' workers into employees. Here's what...