President Obama challenges “Hamilton” creator Lin-Manuel Miranda’s freestyle rap skills in the White House Rose Garden. » Subscribe to NBC News: http://nbcnews.to/SubscribeToNBC » Watch more NBC video: http://bit.ly/MoreNBCNews NBC News is a leading source of global news and information. Here you will find clips from NBC Nightly News, Meet The Press, and our original series Debunker, Flashback, Nerdwatch, and Show …

Trooper Mark Gilberg started his job with the Arizona Department of Public Safety on March 11, 1981. 37 years later, he signs off one last time. Be Smarter. Faster. More Colorful and get the full story at http://www.usatoday.com/ Want even more?! Subscribe to USA TODAY’s YouTube channel: http://bit.ly/1xa3XAh Like USA TODAY on Facebook: https://www.facebook.com/usatoday Follow USA TODAY on Twitter: Tweets …