Approved employment authorization must be approved to start working.

I think it would be wise to retain an experienced immigration attorney. I wouldn't proceed pro se.

Your chances of getting back to Canada would be based on Canadian DUI law, not US. It is best you consult with Canadian immigration lawyers for...

Yes, a joint sponsor may file for two petitions in the same year

USCIS does not encourage late birth registration but recognizes and accepts in lieu secondary evidence.

No. There is no visa category for LPR son to sponsor parents for US permanent residency.

Copies of your Pakistani passport would be acceptable for the N400 interview.

In addition to the responses above, your BF and the civil surgeon should have this discussion.

You may not have the necessary security clearances to know why, and all DHS does.

A properly completed AR11 must reflect current residential address.