Will the U.S tack some one back to canada if they have a warrant for them there ?

Question

My brother was in jail in canada not to long ago and he has court in dec. and i was wanting to know if he dose not go back wat will happen. Will the U.S if they get him tack him back or will they just leave it alone. Rather not say the charges.

Answer 1

If he gets picked up in the US and are aware there is a warrant for him in Canada, they will hold him for Canada to come get.  

Answer 2

Well without knowing the charges, it's hard to say, but they are extradicting deserters from Canada, so I'd say yes.