Entry into Canada and USA
 

Hope to be flying into Canada mid next year with Bike to travel down to Ushuaia S.A. Do i need proof of exiting on entering Canada and USA and all other countries from then on.In other words do i need to book Ship/air ticket for Bike and flight tickets for myself from S.America before i leave UK.
Also any tips on best shipping/airfreight routes for Bike, Panama to Columbia.
Many Thanks !