Hi, I'm a US citizen too. If you don't mind me asking, did both you the applicant and your spouse the sponsor received calls? Were the calls received around the same time? And what did they ask you?
Thanks
Yes, my wife received an e-mail message on 26th March advising her that the ECOs want to interview her and me (regarding my sponsorship of her application) on 28th March. The interviews took place at the same time - i.e., 8:00am PDT O4:00pm GMT.
Their questions were about our relationship: Where we first met/how well we know each other/ how do we communicate/our families/our hobbies/details of the marriage ceremonies/why we choose to leave in UK instead of US/etc.
In other words, they wanted to ascertain that our that marriage is genuine. And the interview was very pleasant: lots of jokes and laughter.
Later on I read that they just wanted to find out if our answers will be similar, etc.