Your pending i-485 petition should not impact your children’s travel to the United States.

A work authorization is required if you wish to be employed. If you do not apply for a new EAD, you may not be able to work legally in the U.S.

Assuming you are a U.S. citizen and at least 21 years of age, you may petition for your sibling and file an I-130.

Since it has been past the standard processing time of 120 days since you took an action, you may follow up with USCIS and explore the possibility...

Yes. You may apply for your family members’ tourist visas.

The speed of the visa bulletin dates is outside the scope of any immigration lawyer.

A step-child can receive immigration benefits (Greencard) through the USC stepparent as long as they are under 18. There is a waiting period before...

There are several avenues to achieve immigrant status in the US. Consult with an attorney to explore your options.

It is best that you seek an experienced immigration attorney’s assistance to review your case.

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You can apply to expedite I485, however, whether it will be approved depends on USCIS.