A guy traveling through Mexico on vacation lost his wallet & all of his identification.

“May I see your identification, please?” asked the agent.
“I’m sorry, but I lost my wallet,” replied the guy.
“Sure, Buddy, I hear that every day. No ID, no entry,” said the agent.
“But I can prove I’m an American!” he exclaimed. “I have a picture of Ronald Reagan
tattooed on one side of my butt & George Bush on the other.”
“This I gotta see,” replied the agent.
With that, the guy dropped his pants & showed the agent his behind.
“By golly, you’re right!” exclaimed the agent. “Have a safe trip back to Chicago.”
“Thanks!” he said. “But how did you know I was from Chicago?”
The agent replied, “I recognized Obama in the middle.”