They need only suspicion....not proof. Your case probably has triggered extensive background checks. It could take a while...or it could be done quickly.
Please clarify. What appointment letter or biometrics appointment are you talking about? If this is a CR-1/IR-1 interview, she should attend as instructed on the email.
Seems to me that you can justify the waiver for spouse to be issued a visa. Getting your case pushed to the front of the line? I think it will take a lot more.
As a US citizen, you can immediately return to the US, get medical care, and seek employment. Separation during the immigration process is sometimes unavoidable. Most of us have endured it.
Is this correct? More info, anyone? I can't find anything official from USCIS....just a couple reports about it buried in employment-based visa information.
USCIS Filing Fee Increase Deferred to Early 2024 | Latest Updates (iiusa.org)