Border crossing jokes

What's a Mexican's favorite song?

"I Walk the Line."

Yo mama so fat, she crosses every border.

Why can't Mexicans cross the border? They always sneak powder in.

I was going from Germany to Austria, and I accidentally crossed the border illegally. When the police caught me, they told me I was a Nazi. I asked them, "Why?" They said I didn't see the border.

Why did the chicken cross to the U.S. from Mexico?

To get to the U.S., but he had to show his papers first.