Ok so we should look at applying for the spouse visa first then while we are in the US.
Yes

. It’s the only way you can do it - she needs the visa first before moving to the U.K.
I’m working now and earning over the minimum UK limit so I thought as long as I had a written job offer from a UK listing my salary there would be no 6mth requirement?
Sort of.
If you are moving back to the UK from overseas, you can meet the requirement in the following ways:
Category A:
- you are currently employed in the US on the date of application and have been employed by your US company, earning at least £18,600 for at least 6 months
AND
- you have a UK job offer paying at least £18,600 and starting within 3 months of returning
OR
Category B:
- you are not currently employed in the US on the date of application but you have earned at least £18,600 in the US in the last 12 months
AND
- you have a UK job offer paying at least £18,600 and starting within 3 months of returning
For Category A you need:
- 6 months of US payslips
- 6 months of US bank statements
- letter from current US employer
AND
- job offer letter/signed contract for new U.K. job
For Category B you need:
- 12 months of US payslips
- 12 months of US bank statements
AND
- job offer letter/signed contract for new U.K. job
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