Is there a chance my brothers deportation could be cancelled?

Much more information is needed. He may or may not be permitted to remain in the US. What should be done now is contact an immigration attorney to...

What jobs are available to me now? Can I still travel internationally with my chargers?

You may be permitted to have a US passport , however, you will need to check with each country you plan to visit to determine if you will be...

You are free to leave the us at anytime but before you leave consider discussing the impact on your eligibility to return before you go.

As long as you have a visa valid a valid passport and continued employment it is permissible. Better is to obtain commuter resident status.

Will I face issue in Stamping with a approved I797A with a consulting firm and working for a different client via a diff vendor?

You may have issues. You should discuss with your employer and your employer’s attorney before departing.

Can I write my mom a job offer letter for I-485 RFE?

You should make an appointment with an immigration attorney before responding to the RFE.

File in your travel to and from the US.

Why did my husband have his fingerprints and photo taken at the interview when he has already had these taken?

This is additional screening added by US CIS and is not necessarily particular to your husband.

You will not be arrested at the US consulate. Your criminal background does not affect the visa petition per se.

Filing petitionI-130 Petition for Alien Relative for father and Unmarried Brother aged 30

Your friend should file for her father and for her brother. The father should be able to come within about a year brother about 12 years or more....