You should not represent yourself in court. An attorney can do a better job ... quite often negotiating with the government attorney ahead of...

USCIS has asked us to resubmit our medicals again. No reason provided. How can we find out the reason ?

Call CIS ... they have been known to make mistakes.

What should you do? Nothing .... patiently wait for the oath ceremony letter.

What comes next?

I agree with Mr. Smith ... you may need to file a waiver ... this process will take a LONG time. Consult an attorney via Skype.

J1 Waiver?

Contact AVVO and ask them to remove your personal information. Yes, having filed for a waiver can cause problems with visa stamping.

I agree with Mr. Smith ... several months is/was the norm.

Don't bother ... your online research is flawed ... in my personal experience the paper-based applications are processed more reliably.

Yes, if you're in the US without status, you could be 'removed'.

As my colleague stated, as long as the papers are RECEIVED by CIS and properly prepared/filed ... you will be fine. Consider having an attorney...

Working for new client/project with current employer A until Employer B petition decision is made

It does not take 4-6 weeks to prepare a premium H transfer case. Talk to their lawyers and NOT some NON-ATTORNEY in HR.