Upvote:-1
This is an optional step to my understanding if you're not going with premium locations. You can buy shipping labels on your own. The appointments at USCIS are suspended as of April 11th (I went to mine today and got turned away). I wonder if the money we paid for appointment will still be fine for re-booking when it is resumed. Hope we won't have to pay again.
Upvote:1
This is an optional step, you may ignore it. TB Certificate is needed if your stay in the UK is beyond 6 months (Ref: https://www.gov.uk/tb-test-visa)
How were you able to reserve appointment with USCIS? Didn't they suspend their service? (Ref: https://www.vfsglobal.co.uk/us/en/news/service-disruption-message-from-uk-visas-immigration)