[QUOTE=NotSlowingAt57;4286625]No you don't need Global Entry to get back into the US. Global Entry is one of the DHS "Trusted Traveler" programs ([URL]https://ttp.cbp.dhs.gov/[/URL]) that gets you into the "fast lane" when crossing the border. Global Entry is is usually only needed if you fly internationally to locations other than Mexico a lot. The Sentri card is usually the card to get if you are going to / from TJ by foot or car a lot.
The passport card works the same as a passport for land entry back into the US. You need a regular passport if you are going fly to / from Mexico or other international destinations. If you are going to get a passport anyways, I suggest also getting the passport card, as it will also be able to be used in place of a REAL I'd drivers license when that becomes a requirement for domestic air travel next year.[/QUOTE]THIS Passport card is much more convenient for crossing US-Mexico border on foot as you can avoid carrying your actual passport and getting passport stamps. Although Global Entry is optional to get back to the US, I still strongly recommend it to save time as the regular line could get very long. Many hotels in Asia want to keep your passport or any form of clients' IDs so having passport card is another plus.
