What shall I do now

Call again and try doing a service request.

I wanted to know if its better for them to file for her or if I should try and file for her. Which process is easier and better?

You may want to discuss strategy by sharing the specifics of your case with an immigration attorney.

Or better yet, other than marriage, what is the best/easiest way for the person to adjust their status?

No, you cannot adjust status under these circumstances.

Can I legally enter the United States on a tourism visa if I will be doing historical research for a book I am writing?

Yes that sounds like a legitimate reason.

File separate petitions for each family member. Timeline will be very different for your brother.

Is it okay for us to fill out an i-130 and send under the current situation?

For 245i puposes you need a copy of evidence of the previous petition. The best evidence would be the receipt notice/approval notice. Consult with...

Can I apply for mother's greencard while she is in the US

As a USC you can petition your mother for a green card. With respect to details on how to do so, you need to schedule a consultation with an...

I stayed for 7 months outside USA for official work. In next month i have citizenship interview. I worked for the same employer

You should discuss this with your lawyer. It's best to have a competent attorney accompany you to your interview.

I-485

Not necessarily. This is quite common to see, and we really don't know what has been done other than perhaps someone looked at your case and...

Hello I got a notice from USCIS with the following: “This is to advise you that, due to unforeseen circumstances,

There's really not much you can do but to wait for a new appointment notice. If you don't hear back within a reasonable time, call USCIS to see if...