If you think President Barack Obama has it tough negotiating with the G20 over the global economy and Iran over its nuclear program, take a look at his next international diplomatic challenge:

OBAMA/OLYMPICSGoing head-to-head with the International Olympic Committee over the venue for the 2016 Summer Games.

Obama thinks it ought to be held in his hometown of Chicago.

He’s so sold on the idea that he’s flying to Copenhagen Friday to put in a personal appearance at a meeting of the IOC — the first time a sitting U.S. president has done so.

Chicago is up against Madrid, Rio de Janeiro and Tokyo as the site for the Olympics.

The Windy City has never hosted a Summer Olympics, nor has Madrid nor Rio.

Tokyo hosted the Summer Olympics in 1964. It also won the bid for the 1940 games but was stripped of the right after the outbreak of its war with China. The 1940 games were ultimately canceled due to World War II.