My child received a SS number recently, Does he need TIN for year 2018 ?

He does not need TIN, as he already has SSN now.

My OPT expires in Feb but employer will file for H1 B April 1st.what are my options to remain in status?

CPT is your option, and to register in new program, to maintain your current status, until change of status is done.

Mean test analysis of deriving public benefits could become an issue in this matter.

Would there be a chance to win a case for Asylum?

DWI seems to be an issue in this matter. Kindly, consult an immigration attorney at your earliest.

Can I sponsore my stepson and mother in law?

Your wife can sponsor immigration petition for her son, and once she become US Citizen, she can file immigration petition for her mother too.

How can I get a permission to travel for like a month to El Salvador with an expired resident ?

It would not be wise to travel with an expired resident card, though status does not expire, if you are maintaining your residency status within...

AS a US Permanent Resident, you are illegible to file Form I-130 only, after your marriage. You cannot sponsor your fiancee as a US Permanent...

13 months outside USA. Should I try SB-1 or DCF for a new i-130?

SB-1 is a properly suggested way to go.

For an approved L1, incase of rejection to an L2 visa for a spouse or kid, can they apply immediately for a B1/B2 visa?

With approved L-1, L-2 stamping for the dependent family members should not be an issue.

How do I put the addresses on the K1 visa as a petitioner if I will be out of the state for training for four months?

You should provide USCIS with your permanent address in Texas.