President Trump formally begins his re-election campaign with a big rally in Orlando tonight. Police in Orlando are bracing for large crowds of Trump supporters and protesters in-and-around the Amway Center. Trump tweeted there were about 100-thousand requests for tickets for the 20-thousand seat Amway Center.    The U.S. is sending a thousand more troops to the Middle East to counter threats posed by Iran. Acting Defense Secretary Pat Shanahan said Monday the soldiers will be deployed for "defensive purposes" against possible threats from Iran. Shanahan insists that the U.S. isn't seeking war with Iran.    Dallas Police are trying to figure out why a 22-year-old heavily armed Army veteran went on a shooting spree outside a federal building and courthouse Monday morning. Brian Clyde of Fort Worth was killed in a shootout with local and federal officers.    Harvard is rescinding admission to a survivor of last year's Parkland, Florida high school shooting. Harvard pulled Kyle Kashuv's admission because of racist comments he apparently made online two years ago. Kashuv announced the school's decision on Twitter, saying he apologized after screen shots of racist posts he made were released.    Facebook will reveal details today about its new cryptocurrency project, code named Libra. The new currency already has support from companies like Visa and PayPal. It's thought it will allow more than two-billion users across Facebook, Instagram and WhatsApp to make transactions without fees.    T-shirts that country singer Granger Smith designed in memory of his late son, River, have already raised more than 100-thousand dollars for Dell Children's Medical Center. All proceeds go to the Austin, Texas hospital where River was treated after a tragic accident earlier this month.