How can EB-5 investors travel with expired green cards and I-797 receipts?

The I-829 receipt notice should allow travel.

You can travel with the original receipt for the period of its validity. That is 18 months now, but after that you need to get a temporary travel stamp.

You may need a stamp from the local USCIS office.

When you travel internationally, please bring your I-797 receipt notice for the I-829 petition and your expired green card. To make it more secure, you can also visit your local USCIS and ask an officer to give you an I-551 stamp on your passport.

Those two documents are all you need to travel.

Using your expired green card along with the original I-829 receipt notice is sufficient for you to travel overseas.

As long as you have a valid passport, your I-797 receipt that you already filed, the I-829 and your expired green card you should be in good shape to travel. Even though your green card is expired, the fact that you have your I-797 receipt as proof that you have filed the I-829 grants you one additional year for the green card beyond the card expiration date.

The Form I-797 receipt notice of filing I-829 can be presented with your expired permanent resident card as evidence of continued status for 18 months past the expiration date on their conditional permanent resident card. You may travel using these documents, remain and work in the U.S. until the new card is issued for those 18 months.

You may travel with your passport, expired green card and the receipt that the I-829 is on file.