Originally Posted by
kairi00
Thanks for all your responses - to provide more information, they are visitors to Canada only. Thanks for the heads up on the government shutdown - this isn't looking good at the moment

Oh dang didn't know they were not from Canada.
Yeah this is going to be an issue. Call your embassy for ideas/help.
Also even with the US govt shutdown, all airport security/border control will be in full force. Those are essential security personnel and there will be border/customs agents working as usual in all US airports