President Obama, Vice President Biden and the first lady welcomed members of Team USA to the White House earlier in the day, along with the U.S. Paralympic team. Obama, who described himself as the “fan in chief,” said the athletes inspired him and “could not have been better ambassadors.”

Olympians were encouraged in their Twitter use this year by the partnership between Twitter and NBC Universal, which owns media rights to the Olympic Games. President and Michelle ObamaMichelle LeVaughn Robinson ObamaObama on social media: You’ve got to ‘think before you tweet’ MSNBC trolls Trump with video montage of Obama saying ‘Merry Christmas’ Overnight Regulation: USDA delays healthy school lunch requirements | Senate panel advances controversial environmental pick | Drone industry pushes to ease rules | Dem commish joins energy regulator MORE exchanged tweets with several of the gold-medal winners during the London Games this summer.

Updated at 5:06 p.m.