Originally Posted by
Shareholder
No problem for you. You just proceed down the escalator and the hang a left down a separate channel for passengers connecting to the USA. You then pick up your checked bag(s) from a dedicated belt and proceed to a dedicated US customs officer after which you merge with others doing US customs preclearance. Your checked bags go back onto a belt and you continue through security. Just ensure you bags are tagged all the way through to DCA and you'll be fine.
If there is such a back-up, just let a security officer know you're headed to the US.
Thanks, feels better knowing that i do not need to deal with that mess.