Jason Kelce has made it clear that he has a huge problem with the signature chant of US Soccer fans. Speaking to his brother Travis on their New Heights podcast, Jason called it the "fucking most loser mentality chant I have ever heard in my entire life." According to Yahoo! Sports , the "I believe that we will win" chant first took hold of US Soccer supporters over a decade ago. The chant became further amplified in ESPN commercials that aired before the 2014 World Cup in Brazil. While the chant continues to go strong, Kelce believes there needs to be a rebrand after seeing how the Brazilian fans operated. "I do remember distinctly thinking how much better, watching soccer, Brazilians were than Americans," Jason said. "You go to the World Cup as an American, they're like, 'I believe that we can win!…