Newt Gingrich discusses gun legislation and suggests Vice President Biden visit Chicago to understand why the laws and system there haven't worked. "Chicago has very strict gun laws; it is also the deadliest city in America where 500 people were killed in Chicago last year," he told Anderson Cooper. "What should we maybe learn from inadequate policing, inadequate enforcement, about a city whose laws on paper are terrific, but whose reality has been really pretty disastrous."