English: A man crossing Mexico–United States border over the Rio Grande in Big Bend National Park to sell handcrafts and folk art (pictured), the art is sold using an honesty box to avoid direct contact with people, signs in the park warn "Purchase or possession of items obtained from Mexican Nationals is illegal.". The maximum prison term for crossing into the US illegally is 6 months for the first offense and 2 years for any subsequent offense.