Former second lady Jill Biden lashed out at President Donald Trump on Saturday, accusing him of "bullying" and being "afraid" to run against her husband. The wife of former Vice President Joe Biden told MSNBC's "Up with David Gura" that Trump was wrong to attack 16-year-old environmental activist Greta Thunberg, who was named Time magazine's person of the year before she was immediately mocked by the president. "That's bullying," Jill Biden told MSNBC. "Look at what the president did this week with that 16-year-old girl, Greta. You can't attack children. That's the bottom line." The Bidens have been center stage...