Yes it is possible. Try putting +1 and then the 10 digit US number.
You can unconditionally forward all calls to a US number. All Fido plans "include" call forwarding but the cost is 0.20 per minute for forwarded calls. Unless you have a very old plan that includes 2500 minutes call forwarding or you pay $3 separately for it, or have 2500 minutes call forwarding through a value package that includes it.