May I put in a rental lease a clause that says: if anyone in the tenant family threats me I may terminate the lease?

You should consult a lawyer to help you with the correct language you can include in residential property lease agreements.

Is it fair for prospective employers to force waiver of FOIA rights on job applications, or in any step thereafter?

With your first question, it is not illegal. With your second questions, it is unclear what you are stating under FOIA. That is a government...

Will I be able to contest my mother and step father's will?

They may include language that provides that one cannot contest it. Also, there are very specific reasons (fraud, mental capacity, etc) that must...

What does it mean to be held in contempt if you don't follow a court order?

You should consult a family law attorney. However, generally, he may have to pay additional funds or be threatened with jail time.

Do I have a case based on civil rights being violated and discrimination because of my age, co-workers are White and Hispanic?

Given your age and ethnicity, you may have the basis for a claim. You should contact a lawyer who practices in employment law.

How to enforce a court order ??

You should discuss this with your divorce attorney. There are certain means to enforce judgments, however there are limitations.

Unless you have an employment agreement that requires notice before termination (or some other event), you can quit for any or no reason.

Are you still entitled to be given 30 days to vacate a rental house even if the lease has already lapsed?

July 31, when the lease ends. Unless there is some other notice requirement within the lease or if there is an automatic renewal of the lease...

Do I have any rights on my house that I am purchasing?

If your mom owns the house and she used it as collateral, the bank has the right to maintain its security on the property and foreclose if there is...

How can I get a lien remove off my home?

You may consider reaching out to the HOA to see if you can resolve it directly with the HOA.