When is the right time to renew EAD ?

I agree with the previous responses. It is best to leave and return quickly.

Can a school take their computer back and charge for a replacement without letting me have an independent 2nd opinion?

Yes, the school can take the computer back if they own it. Best for you to meet with a higher level officer at the school to discuss how the...

How soon after spending 6 straight months in the US can a Canadian visit again?

Probably best to wait till early summer before visiting again.

How can I get Walmart to pay for car damages due to thier neglagence?

You can hire an attorney to evaluate the case and damages; and possibly follow up on your claim.

Can I register my car with a warrant and no drives suspended ?

No, if there is a hold placed on your vehicle. Handle your warrants and you won't have to worry about that.

DS-5540 required?

If he filed prior to February 24, 2020, no it is not required. If you want to be safe, he can take a completed one with him to the interview.

You cannot renew your driver's license while an i290B is pending.

Why is my cousin going to court after crossing the border illegally?

I agree with the previous responses. Advise your cousin to retain the services of an immigration attorney. Otherwise, she will likely be deported.

Extending stay in the US after H1B cap completion using FMLA leaves and applying the change of status to B2?

You can try filing change of status. However, your intent for staying has to match the purpose of a visiting visa. Consult with an experienced...

Can I go to the USA for a month on a valid B1/B2 VISA for an exam, while my immigrant F4 VISA is in administrative processing?

While there is a likelihood that you won't be admitted, if you must travel and you have a valid visa, you can do so with lots of evidence that your...