U.S. bike bought in guatemala borders and papers
 

Hello, and thanks in advance for any help you offer. I bought a Suzuki katana in Guatemala from another American who didn't have time to ride it home. I think I have a way to cross from Guatemala to Mexico but I don't know what will be required at the U.S. Mexico border. I will have a bill of sale and the signed original title, and copies of the Washington registration in the sellers name to match the plates. I know I will need to purchase Mexican insurance, what else will I need as far as paperwork to pass through Mexico and into the U.S.? Thanks -Aaron
oh, we also had a Guatemalan lawyer draw up a permission to use contract and a rental agreement contract just in case.

Looking to find the same information for South America. Friend has a Florida titled bike that he rode to Argentina. He wants to sell to a California resident that's in Argentina so the California person will ride it back to the States. Any help?