I am a US/UK dual national, and I have worked in the UK for my entire adult life. I am filling out the I-864. I was offered a job in the US which is why I am moving myself and my spouse and filing under exceptional circumstances, so I do not have a history of working in the US and have never had to file taxes in the US. I have ticked the box on the I-864 that says: "I was not required to file a federal income tax return as my income was below the IRS required level and I have attached evidence to support this."
As I have never filed taxes in the US, I don't have evidence to support this. What do I do in this situation? Do I provide my tax returns from the UK?
I make over the minimum required amount on the poverty guidelines to support my household, but am still filing with an extra sponsor for safety. Our additional sponsor does have a tax return history - could this help?