Can I sue the postal service for losing my livelihood?

In your response, you said "the union got your job back with pay", but you haven't been paid yet? I would contact your union representative or...

I am going to update your practice area to real estate.

What is the right to travel act all about ?

More information is needed to help answer your question. I would recommend reaching out to a local attorney to discuss your case in more detail.

Amendment is filed while H1B extension is pending?

I am going to update your practice area to make sure attorneys experienced in the area of your question can respond.

What can I do to get answers?

Here is a link with local non profit groups that provide legal assistance. There are number of groups that provide free legal assistance....

Citizenship interview?

Yes,. On the notice you received for the interview there is a phone number and additional instructions on how to change reschedule.

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

I agree with my colleague that you need to provide more details to properly respond to your questions.

Chance of RFE if I change H1B employer, while spouse H1B to H4 COS in progress

Yes it could increase the chances of getting an RFE.

Can I travel internationally with citizenship application pending?

You can travel while N-400 is pending, as long as you are travelling for a short period (assuming you already had the requisite continuous...

What Can I do to keep my wife in the USA even when the lawyer said she has a month left?

More details would be needed to help provide you with an answer to your question. I would recommend contacting an immigration attorney to discuss...