It could be from any of the places you listed.

What should I do if DHS is trying to call me?

You can file but if ICE is looking for you what you should do is contact an attorney for help instead of doing it by yourself or use a nonlawyer...

H1b transfer Dilemma

It becomes a problem only when there are issues with approval of the petition like in case of an RFE or repeat RFE. the best person to answer this...

Can I apply for EAD?

If you talk to your attorney you will learn that you have completed the wait time to pursue work authorization. Work with our attorney.

Do I need to Send form I-785 with my green card documents?

Are you asking about Form 765? Most greencard applicants would like to file for employment authorization which is done on a separate form I-765. ...

Can L2 valid EAD holder apply for H1B for 2019 through current employer?

yes your employer can petition for your h1b.

yes, if you want to continue working as DACA. You can benefit from private legal advice.

Indian citizen and dui in canada

you should contact a lawyer for immigration advice.

one is is required. three years is optional. Check the form instructions.

Can I continue using the Ead from my Ex husband? And can I file tax with my new husband for 2018? I got married in 2019?

You can benefit from private legal advice.