USA Sevens brings world's best to Vegas – but can US rugby live with the best?

As the Eagles prepare to take on Sonny Bill Williams and Bryan Habana, some developing the next generation of American talent say that in an Olympic year, the sport has reached a vital turning point“Imagine what it’s going to be like in 2020 if we’ve got some kids from the Bronx and Brooklyn, playing in the Olympic Games in Tokyo.” Related: USA third place at Dubai Sevens gives notice of growing stake in global game | Martin Pengelly Related: USA sevens rugby star Perry Baker earns Eagles wings in new arena Forty million people watch the Olympics in the US. This year, many of them will see so…