There's really not much difference between the two other than that for someone in TN status unlike someone in H-1B status (1) the intent to apply for a green ca

There's really not much difference between the two other than that for someone in TN status unlike someone in H-1B status (1) the intent to apply for a green card should occur after his or her most recent entry to the U.S. and (2) once a green card application is filed, he or she won't be able to travel internationally until he or she receives a temporary travel document called an advance parole.