While this
question was not addressed in the recently issued R-1 regulation, USCIS has just notified some of
the stakeholder organizations that a worker who holds a valid R-1 issued before
November 26th may travel on that visa for the duration of the visa.
The regulation is NOT retroactive. USCIS has indicated that CBP will be issuing
instructions to the ports of entry along these lines. USCIS will also be
updating its FAQ document to reflect this.>>