Billionaire Mark Cuban unleashes a new barrage against Donald Trump on Twitter.
Hillary Clinton is now all but guaranteed to become the first female major party presidential nominee.
Obama also spoke with Sen. Bernie Sanders of Vermont, thanking him "for energizing millions of Americans."
"Make America great again" has a coded meaning, Hillary Clinton said Tuesday night.
"We welcome you with open arms," Donald Trump said to Bernie Sanders supporters.
CNBC's Josh Lipton looks at Donald Trump's chances in California; and Jane Wells reports on Democratic presidential candidates spending big money in California.
Michael Fertik, Founder & Executive Chairman of Reputation.com, discusses Silicon Valley's views on Donald Trump and which candidate would be best for the tech world.
Nearly 39 million people live in California, and looking at Tuesday's primary ballot, you'd think every one of them is running for U.S. Senate.
For decades, the Golden State has been the 800-pound irrelevant primary gorilla, but this year Hillary Clinton and Bernie Sanders spent big on ads.
The Democratic presidential candidate calls the billionaire businessman's ideas a threat to US safety.
James Spar said Redstone displayed only a "mild degree" of age-related cognitive impairment when he saw the mogul at his home on May 20 and May 24.
CNBC's Josh Lipton reports on Intel CEO Brian Krzanich cancelling his fundraiser for Donald Trump.
Former CNN Chairman and CEO and former Time Magazine editor Walter Isaacson shares his view on Donald Trump versus Hillary Clinton.
Recode reports Intel chief Brian Krzanich is dropping his plan to host a Trump fund-raiser at his home in Atherton, Calif.
CNBC Senior Contributor Larry Kudlow, and Former Pennsylvania Governor Ed Rendell, discuss the upcoming California primary and the chances for an upset in the Democratic contest for Hillary Clinton.
Owners of the electric car have been complaining that the doors don't always open or close.
Tesla Motors said two upcoming software updates should fix persistent glitches with the futuristic rear doors on its Model X SUV.
The city of Irwindale, California, claims in a lawsuit that Huy Fong Foods owes more than $400,000 in unpaid fees.
Mark Alderman, Democratic strategist, discusses what Hillary Clinton can do to stay ahead in California.
NBC News' Tracie Potts reports Donald Trump is having to explain the veteran groups that he said he said he donated to, and Hillary Clinton is going to campaign for five straight days in California.