Can someone who is currently illegally living in the US on an expired visa from Sierra Leone file lawsuits against US citizens?

Immigration status has no bearing on civil lawsuits as you suggests.

I have a felony for stealing in america. i am a citizen of australia. if i go to australia and never came back would that be ok?

This is really not an immigration question. Normally we try to bring people here and/or keep them here. I suggest you direct your question to the...

Brothers are low on the totem pole, more than 10 years I am afraid.

Not to worry, this is a correctable mistake.

I am US citizen. I was born in Colombia and I was granted Asylum Here in the US. Can I visit my country of origin?

US citizens can travel in and out the US but I am confused about your willingness to return to a country that you said you had credible fear with....

Do I need to withdraw *approved* EB3 i-140 in order to file spousal (citizen) supported i-485? Thank you!

No you do not need to withdraw the I-140. given your concern you may want to speak with a local immigration attorney.

I am a b1/b2 visitor, in us i was attacked by robbers (gun shot), i want to go back to home country for treatment & come ag

The U visa should be available but get your facts and evidence evaluated by a local immigration attorney before you leave the US.

Is mortgage loan monthly statement sufficient proof of evidence of real property to support i-864 or wil this be rejected by CIS

Might want to supplement with a copy of his county property tax statement.

Granpa is sick in El Salvador, traveling under DACA, want to travel next week to see him.

Going to be very hard to get this on your time table. Could try to get expedited help through Infopass but you will need substantial evidence and...

Get a criminal attorney to assist if charged and make sure he understands your immigration situation. An arrest has to be disclosed regardless of...