Can i get a H1B cap exempt visa based on approved I-140?

Q: 1. Is my I-140 still valid ? A: Maybe ... have you communicated with the employer to see if they withdrew their I-140? Q: 2. I guess now i...

What is the procedure for submission of the documents after you filled I-130 online?

This is a good example of why people shouldn't file online. Yes, talk to an attorney via Skype.

Would an online calendar converter be enough evidence to prove a mistake on a birth certificate DOB?

I suggest getting the BC corrected, using the passport date. I would NOT confuse things with webpage calculators.

Your facts are a bit confusing. Are you married to someone that it in the US military? Did you have DACA before and recently filed to renew it?

Is it possible to fly to Canada and return to the US immediately ?

This is a VERY BAD plan. What is your long-range goal? In otherwords, why are you trying to stay in the US for such long periods of...

You, or better yet, your husband's lawyer, needs to contact ICE. Most of the time they release the people from the detention center they are in...

I-140 while out of US

Yes, since it is not "your" PERM ... it is the property of the company, not you. Therefore, yes, the company can file "their" I-140 while you...

As long as the I-539 was filed during your 60 day grace period, you will be allowed to stay in the US while it is being processed. Don't leave...

Would it be better (best) if I retain an attorney to complete and submit my application to avoid: #1: errors #2: delays A: Yes ... one option...

No, unfortunately, this is not possible ... Sorry.