No the applicant will need to file on his own for visa.

The officer will request evidence if need be.

There are family or employment means to obtaining a visa.

It may take 30 to 90 days for review of resubmitted documents.

Yes, this must be disclosed on any subsequent DS 160 submission.

Yes, it is advisable to file the I 131 even if no specific travel plans.

Yes they should be able to travel as LPRs to the UK.

While not required, it is recommended to obtain for foreign travel.

Refer to the USCIS find a civil surgeon to locate one nearest you.

The suspicion does not rise to the level of actual marriage fraud.