Resubmit even if previously sent to USCIS.

I agree with my colleagues re: further inquiries re: your case.

Yes you may fly domestically with valid EAD.

Yes this is possible but you should be domiciled in the US for approval.

Yes you may by writing to the service center processing your case.

Domestic travel with a valid passport should be okay.

This shouldn’t be a problem if petitioner is in PR.

Selected as the best answer

No not if your child is a minor under 18.

Have a new cosignor execute the I864.

Yes this is possible but should be US addresses.