Can I apply for a Green Card through adjustment of status based on immediate family and how long this process can take?

You brother can petition you as a US citizen. However, since you are a married adult, this process will take years.

I would suggest you consult this with your DSO.

My question concerns Green card application with criminal record

Regarding your green card application, yes, you should attach the dismissal document to your application package. I suggest you retain an attorney...

How long will it take to get a decision on my husband's I-601 waiver?

You can check the status on uscis.gov using your receipt number to locate his file. These waivers usually take several months to process.

Can my husband file I-140 / I-485 for me while I'm outside the US?

Your husband's employer is responsible for filing the I140. And no, your husband cannot file an I485 for you, you have to file this form.

Did I do this correctly?

At this point, the only thing you can do is wait for a response regarding whether they need additional information. You should have used your joint...

Can the daughter file a petition to get her dad the green card faster or can i file for him fast so the family will be tighter.

Based on the situation you described, the fastest option would be for his daughter to petition him when she turns 21 years old since petitions for...

Will it affect my EAD since my AOS is pending

If your spouse's income is not enough for the i864, you will be able to get another sponsor. Remember that a sponsor does not need to be someone...

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Does my passport need to be valid for the full duration of a non-immigrant work visa?

You may be able to use your old passport with the visa to enter the US.

Is there any criteria to file amendment? Would it be a better option to file a fresh petition rather than going for amendment?

It seems as like you will need to file a new petition based on the magnitude of the change. I suggest you discuss in private with an immigration...