Time to obtain EAD after green card petition filling from parents?

The waiting period for you is 7 and a half years if you are single. When your parents are naturalized you will move from 2B to 1st preference...

Parents got visa for graduation but want to come US a month after graduation day

No problem.

Cellphones - yes. Knives, razors, scissors, sometimes Zippo lighters, baseball bats - no.

My spouse cheats and is in homosexual relationship, will USCIS revoke his Conditional Green Card if I divorce him?

Unusual but not unrealistic. Since your marriage is genuine no reason for him not to get the conditional status removed. There are bisexual...

Best way to apply for my husbands visa is ?

Have you filed US income taxes for the past 3 years? You have to file an affidavit of support for your husband which you are allowed to do if you...

Wife Is Throwing Monkey Wrench Into My Adjustment of Status. I am In Need of a Competent Immigration Lawyer.

You mean your wife is willing to file an I-130 for you but refuses to file I-864? I-130 has no value without I-864.

I90 permanent residence renewal question

Don't worry. It takes nowadays a little bit longer.

I'm on OPT with a valid EAD. Can I continue to use my current EAD while my I-485 is pending? Or do I have to wait until new one?

Even if you engage in authorized employment you most likely will be forgiven since you are marrying a USC. .

Absolutely yes.

Can a green card holder petition for an adjustment/change of status for his father who is presently in the US on a B-2 visa?

No. Only a citizen can petition for his parents.