H1b or U visa on OPT? I am on OPT currently, I am having sponsorship for h1b 2017 also i can file for U visa in 2016!

You have posted too many questions for a free web consultation. Hire an immigration attorney and he/she will guide you.

What will happen if my H-1 gets picked in the lottery. Will it still be valid or will it be revoked?

Once you are not employed for that particular employer for any reason, your H-1B will not be valid anymore.

What do I need to invite my sister over for my baby shower

IF your sister wants to visit you on B2 visa, you do not need to do anything. Having an invitation letter is not required for B2 visa, but you can...

If my mom became a U.s Citizen before I was 18 ? Do I become a U.s citizen ?

Regardless of your mom's petition, you should be able to naturalize yourself assuming you meet all other requirements.

Can I apply for a tourist visa?

Your request for Canadian tourist visa has nothing to do with your green card application and process. Two separate countries and authority....

Missed i130 appt with USCIS today ? What now? Are we in trouble?

Do not waste time and seek for help here. You need to talk to your attorneys. They should be able to help you.

There should be a mistake as derivative cannot be approved before the principal. Do not hesitate to contact USCIS and inquire. Good luck.

I'm green car holder 10 years and was sponsored by my ex- husband. Unfortunatly our relation didn't work out and he is paying s

You need to consult with a family lawyer if you really need help.

I fully agree with my colleagues. Make sure you state the event on your application and ready for explanation. Be truthful. Good luck.

Will my son be able to get an F1 Visa?

The best option for you (as of now) is to talk to your school's international office. As your son was your dependent, they are able to advise you...