Does everyone get the 10 year multi entry visa? If not, what other type of visa could you be issued? Which is most common?

Your question is so broad. Issuing a visa depend on a multiple factors. There is no such thing as common or uncommon visas.

How to explain arrest for reckless driving and other traffic tickets on Form N400 Naturalisation ?

I would recoomend that you talk to your immigration attorney if you already have, or hire one.

Can I change my H1B Sponsor to "B" after my Petition is approved for Sponsor "A" ??

It is better to contact the immigration attorney of the company.

Is a previous approved change of status from B1 to J1 considered an irregular behavior upon applying to a visa ?

No. In general, you may apply to change your nonimmigrant status if you were lawfully admitted to the United States with a nonimmigrant visa, your...

Can I file for citizenship right away?

You information is vague. My question is why didnt you apply earlier?

Yes, you may enter US at a different time within 6 month), but it only can be after the principal has entered.

Can she be deported and have her citizenship rescinded?

Absolutely yes. And sometimes appeal will not help either.

So my question is if we marry in Mexico and he owes child support will that affect him from getting a green card?

The child support money that your spouse owes does not prevent him from obtaining an immigrant visa. Other factors such as criminal record, etc might.

My question is he is eligible to apply U Visa?

Go to USCIS webpage. You might get more information as to regard what is required for U visa.

Can I do a non-study related part-time job when on OPT?

Employment must be directly related to the field of studies. Any employment outside your field of study is unauthorized and is a substantive...