Can I sign a lease at 17 but move in the property a month after once I turn 18?

A contract entered into by a minor child is voidable in some circumstances, but it is a contract nonetheless. The law's purpose in that respect is...

Employment & getting sued?

As long as you are telling the truth, there wouldn't be any valid claim of defamation.

You should be truthful and honest in all your dealings.

What steps do we need to take?

Write or call and ask for the additional documents (or get copies from the court). You might want to ask the judge for a continuance if necessary.

N400 question regarding applicant's father's US citizen status?

It might help if you waited, but if your application is otherwise acceptable, it might not make any difference.

What can I do if my roommate took and hidden my mail (traffic ticket) ?

You can contact the court and explain the circumstances.

Would I have a case to open if I got denied to get my transmission fixed?

The AG webpage has good information about cars. https://www.atg.wa.gov/cars-0

What are my options?

You can sue for defamation of character and ask for an injunction.

How does the custodial parent get permission to travel internationally with child from judge ?

You might not need one. You can petition the court for a residential schedule and move for temporary orders immediately.

Financing denied on vehicle, 2 weeks after I drove it home.

If the other party to a contract breached the contract, it can be grounds to allege rescission. Other times, a deal is a deal. Read your copy of...