The Argentine has been as excellent as ever in his later years, but his presence and performance has yet to push MLS into the US mainstream The Argentine has been as excellent as ever in his later years, but his presence and performance has yet to push MLS into the US mainstream O K, show of hands. How many of you knew that Lionel Messi – a global superstar who has committed to spend his next three years in the United States – just completed the best individual season in Major League Soccer