[ReallyOldLurker]

Personal anecdote: my brother was robbed in Mexico of everything including shoes. He went to the embassy for assistance. He was give some McDonalds coupons and told to use them when he got across the border. He even asked them to check against police records, knowing that he had an outstanding misdemeanor warrant. No go. No help. At least one of the persons at the embassy was honest and told him that embassies only help government officials, rich, or public figures. Fortunately he eventually found a way to get in contact with us (much, much later). In the end the way to get back is to just try to push through a border gate so that you'll get arrested. Then they'll be forced to confirm your identity.