Do i legible to become a US citizen, legally in the country for 21 years, most resent conviction for DUI fall 2014

You must wait to naturalize because of the DUI. You need to check whether the 2003 felony makes you subject to deportation.

You must go to your home country to satisfy 212e, J-1 home residence requirement.

I appreciate your enthusiasm for your art. Any activity that could be considered work must be authorized. There may be strategies you can pursue....

Can I file for some sort of EAD whilst my case is worked through the immigration court system that allows me to carry on working

You can continue working on your green card. You are going through a number of ramifications without all the information that is available to an...

Procedure to apply for green card under marriage based category where dual US Canadian citizen wife (would be) living in Canada?

You have many issues that complicate your US citizen spousal sponsorship. I sense timing is an important part of your plans. I recommend you...

What is the process after your PERM Labor Certification application gets approved (in case of applying from outside US)?

Upon PERM certification the I-140 may be filed. You must be in the US to file the I-485. Otherwise, your employer may state consulate processing...

It is possible to be in the US in J-1 status and file a petition to change your status to H or L if you, the position, and your employer qualify...

That will do. Fully expect the Dept of State to cash your check. Congratulations! Citizen.

I agree with both of these learned colleagues. And, depending upon your answers to their responses. There may be other possibilities immigration...

I am Australian and my US employer wants to get an E3 visa. Can they pay me mostly in equity?

You must be paid the LCA prevailing wage or the actual wage whichever is higher. That being said there are several strategies you and the employer...