Thanks @JoeF. Does that mean, once I leave the country, I wouldn't be able to come back to US? Or, if I cross the border either to Mexico or Canada or any of the British Virgin Islands, would I not be able to come back to US? CBP website doesn't show my I-94 but my I-797 says that my I-94 is valid until end of this year. So, wondering if I leave to Mexico or Canada or any of the British Virgin Islands and come back to US within 30 days with the existing I-797 without going for a US Consulate for Visa. I appreciate if you could please shed some light on this.