Thank you Srimurthy and Q! Ability to go abroad is one of my big concerns (in the specific case that I join on receipt)
Lets say I have H1b approval with current company until 2021, and I change companies and join new company on H1b receipt. New H1b is not approved. Can I even go abroad and re-enter in the following 2 cases ?
1) if I have my H1b stamp on passport with old company only until 2018 ?
2) if I have my H1b stamp on passport with old company until 2021 ?