sending a message to the rest of the world that just because something happens to you because of who you are, no matter what you do, people will always have your back. >> 14-year-old ahmed mohamed saw a massive yut pouring of support last month after he was pulled out of class in irving, texas interrogated by police and put in handcuffs because of a homemade clock he took to school to impress his teachers. and among the hundreds of thousands of messages ahmed got on social media was one from president obama who tweeted "cool clock, ahmed. want to bring it to the white house? we should inspire more kids like you to like science. it's what makes america great." the clock is still in texas. irving police tell "all in" no one has picked it up yet. but ahmed himself did make it to the white house tonight, stargazing with nasa scientists and astronauts on the south lawn as part avenue stron mi night. the president and ahmed did chat briefly in the crowd and ahmed could advance the cause of science by cathy a singularity in cable news. all he has to do now is whip up a joe biden decision countdown clock while he's in town. plaque psoriasis... ...isn't it time to let the...