I have read numerous posts which lead me to believe that we will need to clear customs in Houston, retrieve our bags and go through customs, and then drop the bags on a connecting conveyor. Then we need to pass through security again even though we are immediately flying out of the countrty to Canada. Do i have this correct so far? Then, looking at an airport map, international arrivals are at terminal D or E. Our flights are with United on both legs and I assume we will fly out of terminal A since that terminal shows Air Canada and UNITED Express (affiliates). We land at 11:22 and depart 12:52. Sounds tight based on other postings but United seemed to think OK since they booked it. Looks like there is a monorail from D/E to A. Is that the best route to take ans am i correct about the customs and luggage handling. Leaving soon.