Sen. Barack Obama (D-Ill.) may have one of the best-known faces in the world, but that doesn’t mean he is recognized everywhere, even in Washington. Washington Sports Club employee Takehia Wheeler was manning the front desk to scan members’ identification cards Friday morning when the presidential candidate walked in with his entourage. The gym opened a month ago in the Columbia Heights district. “He came in and walked past me,” Wheeler told In The Know. “I was like, ‘Sir, you need to come back.’ ” Wheeler said Obama looked familiar, but she didn’t recognize him. So she asked for his...