Will I have problems going home at the Canadian border,due to overstaying my visit in the US even if my passport is still valid?

Your question is probably better suited for the Canadian bar, but a valid passport is sufficient to travel to Canada.

Does the place of residence affect the priority date of an immigration petitions beneficiary?

Pakistan and Kenya are listed under the same visa bulletin category as to priority date but could have different number of visas available.

Will a resident get deported if he is a first offender but got these charges?

Much more information is needed before answering this question. You should see a local immigration attorney ASAP.

Do I have to report that my sister is here with me when Im filling out the Ds160 for my parents to get the b1/b2 visa?

Yes you do have to answer the question completely and honestly.

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How do the warrantor can help to get political asylum? And how to get free advocate help?

There are many groups in California that provide pro bono legal services. You may start by calling the San Diego Bar association for that information.

Do I need to list employment before I moved to US if I file N-400 90 days early?

The response to the question is literal, five years before the grant of the green card.

Can my soon to be ex wife lose her U.S. Citizen status acquired through marriage, due to a divorce soon after becoming a citizen

Not based on the facts that you have presented. Fraud can be an issue, but note that immigration matters are not there for purposes of revenge or...

What should I do after that? should I go back home after the expiration or what? I don't know what to do?

There is a well established process for your circumstance. File for your divorce, and when the time comes to remove your condition, request a...

Can my husband apply green card for me while I'm in US with non immigration visa? I'm married an US citizen outside of US.

It is possible for your husband to file while you are here on a visitor's visa. Problem is to get the visa you told immigration you were only...

Apply F-1 if family based immigration is denied

That could be problematic as an F1 requires a non-immigrant intent, the opposite of family based immigration.