President Barack Obama and First Lady Michelle Obama sparked a wave of attention after posting a video on Twitter challenging Prince Harry to the Invictus Games, held last week in Orlando. 'The Invictus Games was started two years ago by Prince Harry - it's an international sports competition [for wounded veterans] and it's largely unknown in the U.S.,' said Marc Scheipe, a veteran and president of Sage North America, an HR software company and official supporter of The Invictus Games. 'To have the first lady and the president engaged - it really generated some nice momentum heading into the games.' The Obama video, posted on Twitter, was retweeted almost 6,000 times. Canada's prime minster Justin Trudeau also posted a memorable video, promoting his nation's competitiveness in the games. His Twitter video garnered almost 5,000 retweets. Scheipe. Subscribe to TheStreetTV on YouTube:.