Can one spouse be awarded half of the other spouses social security benefits that were contributed to during a 15 yr marriage?

Social Security benefits are not usually "divided" but when one spouse passes away, the remaining spouse may elect to take benefits off their own...

No need to reopen it. You need to file a petition to seek to be appointed the new administrator. Seek legal assistance on this from a skilled...

Divorce

You need to actually post a question and a brief description in order to elicit some advice.

In the middle of divorce, considering bankruptcy

You need to do proper discovery to find the assets and income. As to the tax liens, then they are probably community debts that need proper...

When are trial briefs due in a divorce trial and must sides file them?

You are usually required to file and serve them no later than 5 court days prior to the trial.

Interesting question. But no it doesn't advantage anyone. I don't know the sources you are looking at but I question their validity. As to gay...

If I mediate with spouse in divorce, but he doesn't show all his true finances bc he's hiding it w/dad's account, what do I do?

You can and should do all you have suggested above. Would probably use a PI as a very last resort, though. Why don't you get an attorney to help...

Can I change my schedule of assets and debts 1 day before my trial?

You can always make that claim but the burden is on you to prove the claim regarding your separate property claim.

If the attorney I hired failed to serve on the other party my Declarations of Disclosure, can I ask for the trial to be continue

If what you say is true and it actually affected his duties, then yes you can.

Can a noticed motion be served on the other party on the day of trial in a divorce action?

If indeed you just came into possession and the earliest date is the day of the trial, then yes. But if you've been sitting on it hoping to spring...