I have a work permit and I have a pending I-485, can I go to McAllen, Texas and back to Houston crossing the Falfurrias check ?

Yes, if you don't leave the US and have copies of your USCIS receipts. Contact a US immigration attorney for review before traveling.

Contact an international child custody / support attorney for review & assistance.

Need help with writing a J1 waiver explanation statement.

Contact a US immigration attorney for assistance with filing.

Contact a US immigration attorney for specific review.

No - you don't need to have a valid passport to be approved. Contact a US immigration attorney.

Multiple H1-B Transfer?

Provide this information to Company C's US immigration attorney for their review.

Is it illegal if this 18 year old leaves hickeys on a 16 year old leg?

Contact the parents of the 16 year old - this is not a US immigration question.

How persons who was born in US can obtain form N-600 (Certificate of citizenship) ?

You are a US citizen. Apply for a US passport.

Is there any way I wont be denied?

Contact a US immigration attorney for re-filing since it will have to be denied.

Previously asked and answered - review previous question.