I'm currently in Lisbon until Monday morning. When I got to SFO this week for my flight here I realized I had brought my daughter's US passport by mistake. Not to worry, I just showed my UK passport to the gate agent at SFO.

I'm now worried that I'll have issues on Monday because if I travel back using my UK passport, the airline (KLM) will be expecting an ESTA. Entry to the USA will be fine since I do have my global entry card with me to prove US Citizenship.

What would you do in my position?